... Title : THE QUANTUM THEORY OF THE CONDUCTIVITY TENSOR OF THE PLASMA MODEL OF A METAL IN AN EXTERNAL MAGNETIC FIELD. ...

The quantum hydrodynamic model for plasmas is employed to derive a new dispersion relation for the dust acoustic wave. It is found that the dispersion property of the latter is significantly affected by quantum corrections.

The role of quantum effects in the theory of Langmuir waves in a collisionless plasma is shown to be important for flows of quantum particles resonantly interacting with plasma oscillations and for plasma electromagnetic waves undergoing resonant scattering.

We discuss the quantum magnetohydrodynamic (QMHD) model for quantum plasmas. In the infinite conductivity limit, QMHD differ from classical MHD in view of the presence of an extra dispersive term in the force equation. The quantum term is proportional to a non-dimensional parameter H. We derive conditions for ...

Nonlinear quantum-mechanical equations are derived for Langmuir waves in an isotropic electron collisionless plasma. A general analysis of dispersion relations is carried out for complex spectra of Langmuir waves and van Kampen waves in a quantum plasma with an arbitrary electron momentum distribution. ...

Nonlinear quantum-mechanical equations are derived for Langmuir waves in an isotropic electron collisionless plasma. A general analysis of dispersion relations is carried out for complex spectra of Langmuir waves and van Kampen waves in a quantum plasma with an arbitrary electron momentum distribution. ...

The nonlinear evolution of plasma waves in quantum plasmas is studied up to and beyond the wavebreaking limit. Wavebreaking sets basic limitations to hydrodynamic models. In this work, a complete quantum kinetic computational approach is presented. Linear dispersion relations and Landau damping rates can be ...

The quantum hydrodynamic model for charged particle systems is extended to the cases of nonzero magnetic fields. In this way, quantum corrections to magnetohydrodynamics are obtained starting from the quantum hydrodynamical model with magnetic fields. The importance of the quantum corrections is described by a ...

... Title : TWO QUANTUM STATISTICAL TREATMENTS OF SPECTRA LINE SHAPES EMITTED FROM PLASMAS. Descriptive Note : Final rept.,. ...

... THEORY), PLASMAS(PHYSICS), QUANTUM THEORY, QUANTUM STATISTICS, BOSONS, FERMIONS, ELEMENTARY PARTICLES, DYNAMICS ...

... Title : LONG WAVELENGTH OSCILLATIONS OF A QUANTUM PLASMA IN A UNIFORM MAGNETIC FIELD II. Descriptive Note : Technical rept. no. ...

... perturbative method for studying few-body interactions in such quantum systems as the quark-gluon plasma. The classical results ...

The influence of quantum effects on the interaction of intense laser fields with plasmas is investigated by using a hydrodynamic model based on the framework of the relativistic quantum theory. Starting from the covariant Wigner function and Dirac equation, the hydrodynamic equations for relativistic quantum ...

The influence of quantum effects on the interaction of intense laser fields with plasmas is investigated by using a hydrodynamic model based on the framework of the relativistic quantum theory. Starting from the covariant Wigner function and Dirac equation, the hydrodynamic equations for relativistic quantum ...

Subject Terms: ELECTRON TUBE; ELECTRON TUBES; PLASMA; PLASMA PHYSICS; QUANTUM ELECTRONICS; QUANTUM THEORY; SYSTEMS ANALYSIS. Notes: <1965< 172 P ...

Using the Born approximation, the quantum corrlation function for a low-temperature nondegenerate plasma is evaluated to determine the partition function. (AIP)

The fully nonlinear governing equations for spin-(1)/(2) quantum plasmas are presented. Starting from the Pauli equation, the relevant plasma equations are derived, and it is shown that nontrivial quantum spin couplings arise, enabling studies of the combined collective and spin dynamics. The linear response of the ...

The high frequency conductivity of a magnetoplasma is calculated from a fully convergent quantum mechanical kinetic equation. The frequency of the perturbing field is not restricted to frequencies low in comparison with the plasma frequency nor is the temperature of the unperturbed plasma restricted to values low in comparison with a ...

... EMISSION, PEAK VALUES, RADIATION, QUANTUM WELLS ... PARABOLAS, CONFINEMENT(GENERAL), DECAY, PLASMA INSTABILITIES. ...

... Descriptors : *COHERENT RADIATION, *PLASMA INSTABILITIES, STEADY STATE, MAGNETIC FIELDS, QUANTUM WELLS, ELECTRON ...

The quantum electrodynamical (QED) short wavelength correction on plasma wave propagation for a nonrelativistic quantum plasma is investigated. A general dispersion relation for a thermal multicomponent quantum plasma is derived. It is found that the classical dispersion ...

The dispersion of linear waves in a uniform cold quantum plasma is derived using the quantum hydrodynamic equations with the magnetic field of the Wigner-Poisson system. The dispersion of the Langmuir wave becomes whistler-like due to quantum effects and, therefore, the Langmuir wave can propagate in a cold ...

The filamentation instability occurring when a nonrelativistic electron beam passes through a quantum magnetized plasma is investigated by means of a cold quantum magnetohydrodynamic model. It is proved that the instability can be completely suppressed by quantum effects if and only if a finite magnetic field is ...

By using the quantum magnetohydrodynamic model, the electrostatic waves in weakly magnetized quantum plasmas are investigated. The electrons are treated as a quantum and magnetized species, while the ions are classical unmagnetized ones. The general dispersion relations are derived. It is shown that, both the high ...

#12;Modulation of quantum electron plasmas Fluid model Nonlinear Schr�odinger-Poisson system - an example Let usOn the modeling of quantum plasmas Hugo Ter�cas CFIF, Instituto Superior T�ecnico, Lisbon 19th October 2007 Hugo Ter�cas (CFIF, Instituto Superior T�ecnico, Lisbon)On the modeling of ...

Using plasma physics methods, the effective neutrino charge in a superdense two-electron Fermi plasma is determined. The Fermi plasma has distinct groups of hot and cold electrons. Accounting for the quantum statistical pressure for the hot electron component and the quantum force associated ...

The dielectric tensor for a quantum plasma is derived by using a linearized quantum hydrodynamic theory. The wave functions for a nanostructure bound system have been investigated. Finally, the power loss for an oscillating charge distribution of a mixed state will be calculated, using the dielectric function formalism.

Surface modes are coupled electromagnetic/electrostatic excitations of free electrons near the vacuum-plasma interface and can be excited on a sufficiently dense plasma half-space. They propagate along the surface plane and decay in either sides of the boundary. In such dense plasma models, which are of interest in electronic signal ...

By employing a quantum hydrodynamic model for bounded three-component quantum plasmas, two kinds of streaming instabilities due to ion-streaming and dust-streaming are studied. For this purpose, the dispersion relation for the bounded wave in quantum electron-ion-dust plasmas is obtained by ...

By considering the one-dimensional quantum hydrodynamic model for a three-species ultracold quantum dusty plasma, the properties of dust-ion-acoustic waves are studied. The dispersion relation in the linear regime and the Korteweg-de Vries equation in the nonlinear regime are derived by incorporating quantum ...

The quantum-mechanical distribution function (q.m.d.f.) approach is extended to obtain the response of a quantum plasma to classical transverse electromagnetic fields. The interaction is treated in a self-consistent-field approximation. A perturbation calculation is carried through for the case in which the ...

The effect of quantum degeneracy on the electron collisional excitation is investigated, and its effects on line emission evaluated for applications to spectroscopy of dense, cold plasmas. A correction to Saha equation for weakly-degenerate plasmas is also presented.

Quantum corrections are considered for the thermodynamic properties of dense plasmas such as found at the center of the Sun or those created by inertial compression fusion. The pseudopotential between two charged particles is discussed. The single compone...

Upcoming heavy ion experiments at the AGS and SPS are aimed at producing and diagnosing a primordial form of matter, the quark-gluon plasma. In these lectures some recent developments on formulating a quantum transport theory for quark-gluon plasmas are introduced. 46 refs.

Upcoming heavy ion experiments at the AGS and SPS are aimed at producing and diagnosing a primordial form of matter, the quark-gluon plasma. In these lectures some recent developments on formulating a quantum transport theory for quark-gluon plasmas are i...

A quantum kinetic equation, valid for relativistic unmagnetized plasmas, is derived here. This equation describes the evolution of a quantum quasi-distribution, which is the Wigner function for relativistic spinless charged particles in a plasma, and it is exactly equivalent to a Klein-Gordon equation. Our ...

The effect of counterstreaming on the quantum plasmon-polariton excitation is examined. For this purpose, the dispersion relation describing a counterstreaming quantum plasma system has been derived. Solutions are displayed numerically and analyzed for different values of the quantum parameters and the streaming ...

We have observed the signatures of quantum trajectories while generating harmonics in metal plasmas by using a high pulse repetition rate (1-kHz) Ti:sapphire laser source. We present how focusing conditions, laser intensity, plasma concentration, and the chirp of laser radiation influence the observation of separated ...

The quantum effects on the formation of the negative hydrogen ion (H{sup -}) by the polarization electron capture process are investigated in partially ionized dense hydrogen plasmas. It is shown that the quantum effect strongly suppresses the electron capture radius as well as the cross section for the formation of the negative ...

A nonlinear equation for ion acoustic waves in dense quantum plasmas (which is analogous to the classical plasma case) has been obtained in a particular limit. Therefore it is proposed that electrostatic monopolar and dipolar vortices can appear in uniform dense quantum plasmas due to large ...

Highlights INFM 2000/2001 1.Atomic and Molecular Physics, Quantum Electronics and Plasma Physics 1, processing, storing, or computing. The marriage of Quantum Physics and Information Technology -originally the text). 1 2 11 #12;Highlights INFM 2000/2001 1.Atomic and Molecular Physics, Quantum Electronics and ...

The obliquely propagating two-dimensional quantum dust ion-acoustic solitary waves in a magnetized quantum dusty plasma are studied by using the quantum hydrodynamic model. A linear dispersion relation is obtained using the Fourier analysis, and a nonlinear quantum Zakharov-Kuznetsov equation ...

We investigate the nonlinear interaction between a relativistically strong laser wave and a plasma in the quantum regime. The collective behavior of electrons is modeled by the Klein-Gordon equation, which is coupled nonlinearly to the electromagnetic wave equation and Poisson's equation for the electromagnetic vector and scalar potentials. This allows us ...

... quality structures. We have shown that it also leads to the instability of the 2D plasmons in the quantum well. The build ...

An analysis of the interaction between modes involving two species with different pressures in the presence of a static-neutralizing ion background is presented using a quantum hydrodynamic model. It is shown that quantum electron plasma waves can nonlinearly interact with quantum electron acoustic waves in a time ...

The role of electron-electron interactions in the development of condensed matter physics is surveyed. Quantum plasmas, helium liquids, and superconductors are considered. (AIP)

A quantum mechanical treatment of an electron plasma in a constant and homogeneous magnetic field is considered, with the aim of (a) defining the range of ...

The effect of short wavelength quantum electrodynamic (QED) correction on plasma-wave propagation is investigated. The effect on plasma oscillations and on electromagnetic waves in an unmagnetized as well as a magnetized plasma is investigated. The effects of the short wavelength QED corrections are most evident ...

The nonlinear interaction between a large-amplitude electromagnetic wave (EMW) and low-frequency electron and ion plasma oscillations in a quantum plasma is considered. By using the Maxwell equations and the quantum hydrodynamic equations, a system of equations, which shows the nonlinear couplings between the EMWs ...

The nonlinear interaction between a large-amplitude electromagnetic wave (EMW) and low-frequency electron and ion plasma oscillations in a quantum plasma is considered. By using the Maxwell equations and the quantum hydrodynamic equations, a system of equations, which shows the nonlinear couplings between the EMWs ...

Jeans instability in a homogeneous cold quantum dusty plasma in the presence of the ambient magnetic field and the quantum effect arising through the Bohm potential has been examined using the quantum magnetohydrodynamic model. It is found that the Jeans instability is significantly reduced by the presence of the ...

A fundamental question that is important for the understanding of plasma processes concerns charged particles and plasma interactions. For moving particles (test objects in a plasma flow), these include the formation of plasma wakes. The plasma flow provides not only a direct dragging ...

The current understanding of some important nonlinear collective processes in quantum plasmas with degenerate electrons is presented. After reviewing the basic properties of quantum plasmas, model equations (e.g., the quantum hydrodynamic and effective nonlinear Schr�dinger-Poisson equations) ...

The screening of the Coulomb interaction is studied with regard to Friedel oscillations in multicomponent electron plasma structure. A double quantum well (QW) and a superlattice are considered. The groundstate energy of a donor (exciton) in a double quantum well is calculated by a variational method as a function of the population of ...

It is argued that the inclusion of the Bohm potential in quantum fluid equations is equivalent to inclusion of a nonrelativistic form of the quantum recoil in plasma kinetic theory. The Bohm term is incorrect when applied to waves with phase speed greater than the speed of light.

A quantum kinetic equation has been obtained for a system of particles with Coulomb interaction. This equation differs from the known quantum kinetic equation by the fact that correlation of the mutual positions of charged particles has been taken into account. (auth)

We consider high field physics due to quantum electrodynamics, in particular those that can be studied in the next generation of laser facilities. Effective field theories based on the Euler-Heisenberg Lagrangian are briefly reviewed, and examples involving plasma- and vacuum physics are given.

Dense quantum plasmas are ubiquitous in compact astrophysical objects (e.g. the interior of white dwarf stars, in magnetars, etc.), in semiconductors and micro-mechanical systems, as well as in the next generation intense laser-solid density plasma interaction experiments. In contrast to classical plasmas, one ...

Modulational instabilities of electromagnetic electron-cyclotron waves in a dense magnetized plasma are investigated. Dispersion relations for the modulational instabilities are derived and analyzed. The effects of quantum statistical pressure and quantum electron tunneling are discussed.

The plasma screening and quantum effects on ion--ion collisions are investigated in a nonideal Al and Cu dense metal plasma. Eikonal analysis and the effective pseudopotential model of the quantum--mechanical and plasma screening effects are used to obtain the eikonal phase shift and eikonal ...

Plasma density and confinement times necessary for operating fusion reactors are discussed. One method for increasing densities and confinement time is that of plasma exponentiation. In this process the injected current is increasingly trapped on its own ...

We demonstrate a modulated plasma guiding effect from the molecular alignment wakes in the hydrodynamic plasma waveguide. A properly time-delayed laser pulse can be spatially confined by the hydrodynamic expansion induced plasma waveguide of an advancing femtosecond laser pulse. The spatial confinement can be further strengthened or ...

The propagation of nonplanar quantum ion-acoustic solitary waves in a dense, unmagnetized electron-positronion (e-p-i) plasma are studied by using the Korteweg-de Vries (KdV) model. The quantum hydrodynamic (QHD) equations are used taking into account the quantum diffraction and quantum ...

The unexpected features of the two-stream instability in electrostatic quantum plasmas are interpreted in terms of the coupling of approximate fast and slow waves. This is accomplished through the factorization of the dispersion relation into different sectors having positive or negative energy. Therefore, the concept of negative and positive energy waves ...

-Nuclear and Particle Physics Experimental Theoretical -Photonics and Quantum Electronics -Plasma Physics -Space Physics Particles and Electric Fields ...

... description. Quantum mechanics plays a central role in many of these problems, and is an important ingredient in our work. ...

... index to significant articles, news items, and ... research, *Quantum electronics, *Radio astronomy, *Plasmas(Physics), *Communication and ...

... index to significant articles, news items, and ... research, *Quantum electronics, *Radio astronomy, *Plasmas(Physics), *Communication and ...

... index to significant articles, news items, and ... research, *Quantum electronics, *Radio astronomy, *Plasmas(Physics), *Communication and ...

... FUNCTION, PARTIAL DIFFERENTIAL EQUATIONS, DISPERSION RELATIONS, INTEGRALS ... THEORY, SOLAR CORONA, SOLID STATE PHYSICS ...

... action principle for classical mechanics Adiabatic invariants of plasmas in non-uniform magnetic fi lds Canonical transformations as unitary ...

, Extraterrestrial Physics, Plasma Physics, Quantum Optics), several institutes of the Bavarian Academy of Sciences

hydrodynamics; quantum field theory;. elementary particles; plasma physics. Teacher School: Pomeranchuk; E. & I. Lifshits; Abrikosov; ...

The growth of (11-20) or a-plane quantum dots and quantum wells by plasma-assisted molecular-beam epitaxy has been studied. It is shown that Ga-rich conditions lead to the formation of quantum dots, whereas quantum wells are obtained in N-rich conditions. Combining various experimental ...

The effect of dust size distribution in ultracold quantum dusty plasmas are investigated in this paper. How the dispersion relation and the propagation velocity for the quantum dusty plasma vary with the system parameters and the different dust distribution are studied. It is found that as the Fermi temperature of ...

By using the dielectric response function of quantum electron plasmas, potential distributions around a moving test charge are calculated. The near-field potential follows the modified Debye-Hueckel potential, while the far-field potential turns out to be oscillatory. Both the Debye-Hueckel and wake potentials strongly depend on the Fermi energy and the ...

The low frequency electrostatic and electromagnetic linear modes in a nonuniform cold quantum electron-ion plasma are studied. The effect of stationary dust on an electrostatic mode is also investigated. The quantum corrections in the linear dispersion relations of a cold dense plasma are presented with possible ...

Cylindrical and spherical amplitude modulation of quantum ion-acoustic (QIA) envelope solitary waves in a dense quantum plasma comprised of electrons and ions is investigated. For this purpose, a one-dimensional quantum hydrodynamic model and the Poisson equation are considered. By using the standard reductive ...

Ion acoustic waves in a homogeneous quantum plasma, comprising of positive, negative ions, and electrons, have been investigated via the Korteweg-de Vries equation. The positive and negative ions are taken inertial and electrons are taken as inertialess. It is determined that the dispersive property of quantum ...

The evolution of the intensity of a relativistic laser beam propagating through a dense quantum plasma is investigated, by considering different plasma regimes. A cold quantum fluid plasma and then a thermal quantum description(s) is (are) adopted, in comparison with the ...

By employing the quantum hydrodynamic model, linear and nonlinear properties of quantum ion-acoustic waves are studied in a nonuniform, dissipative quantum plasma with sheared ion flow parallel to the ambient magnetic field. It is shown that the shear flow parallel to the magnetic field can drive the ...

A coupled linear dispersion relation for the basic electrostatic and electromagnetic waves in the ultracold nonuniform magnetized dense plasmas has been obtained which interestingly is analogous to the classical case. The scales of macroscopic phenomena and the interparticle quantum interactions are discussed. It is important to point out that hydrodynamic ...

Starting from the eikonal approximation (geometrical optics), a set of nonlinear quantum plasma fluid equations to describe the quantum free-electron laser (FEL) is presented. Subsequently, by using these fluid equations for a relativistic electron beam, interacting with stimulated radiation and an optical wiggler field, a general ...

The Weibel instability in the quantum plasma case is treated by means of a fluidlike (moments) approach. Quantum modifications to the macroscopic equations are then identified as effects of the first or second kind. Quantum effects of the first kind correspond to a dispersive term, similar to the Bohm potential in ...

Electrostatic drift waves (EDWs) in nonuniform quantum magnetized plasmas are described by the quantum hydrodynamic model. Electrons are viewed as a low-temperature Fermi gas. Analytical expression of the dispersion relationship of the quantum EDW is presented. Quantum effects are shown to ...

Nonlinear propagation of quantum ion acoustic waves in a dense quantum plasma whose constituents are electrons, positrons, and positive ions is investigated using a quantum hydrodynamic model. The Korteweg-de Vries equation is derived using reductive perturbation technique. The higher order inhomogeneous ...

Korteweg de Vries Burgers equation for negative ion degenerate dissipative plasma has been derived using reductive perturbation technique. The quantum hydrodynamic model is used to study the quantum ion acoustic shock waves. The effects of different parameters on quantum ion acoustic shock waves are studied. It is ...

A systematic study of the absorption of electromagnetic waves in a quantum plasma is given, for waves whose frequencies are high compared to the collision frequency and whose wavelengths are long compared to the Bohr radius. The treatment rests on the introduction of the temperaturedependent Green's function and Kubo's formula ...

The propagation of surface electromagnetic waves along a uniform magnetic field is studied in a quantum electron-hole semiconductor plasma. A forward propagating mode is found by including the effect of quantum tunneling. In the classical limit (??0), one of the low-frequency modes found is similar to an experimentally observed one in ...

By using a quantum hydrodynamic model, the amplitude modulation of electron plasma oscillations (EPOs) in an unmagnetized dense electron-hole (e-h) quantum plasma is investigated. The standard reductive perturbation technique is used to derive one-dimensional nonlinear Schroedinger equation for the modulated EPO ...

A study was made of hydrogenic energy levels as modified by a plasma. This was done through a perturbation expansion of the partition function of the multicomponent plasma, which gives rise to a pseudo-Schroedinger equation. The level shift and width were...

The diagram technique for Green's statistical functions in quantum statistical physics was applied to interaction corrections for the thermodynamic potential OMEGA in completely ionized hydrogen plasma. The electron plasma is considered as a Fermi gas and nuclei from a Boltzman gas. (R.V.J.)

Obliquely propagating linear and weakly nonlinear ion-acoustic waves in a magnetized quantum plasma are investigated by employing the quantum hydrodynamic formulation. A linear dispersion relation is presented and the nonlinear Korteweg-de Vries equation is derived using the reductive perturbative method. The dispersion caused by the ...

It is investigated how the shielding of a moving point charge in a one-component fully degenerate fermion plasma affects the bound states near the charge at velocities smaller than the Fermi one. The shielding is accounted for by using the Lindhard dielectric function, and the resulting potential is substituted into the Schr�dinger equation in order to obtain the energy ...

Ion acoustic shock waves (IASWs) are studied in an unmagnetized quantum plasma consisting of electrons, positrons, and ions employing the quantum hydrodynamic (QHD) model. Nonlinear quantum IASWs are investigated by deriving the Korteweg-deVries-Burger equation under the small amplitude perturbation expansion ...

The linear and nonlinear quantum ion-acoustic waves propagating obliquely in two dimensions in superdense, magnetized electron-positron-ion quantum plasma are investigated on the basis of quantum hydrodynamic model. It is found in linear analysis that the quantum corrections of diffraction are ...

S>A quantum theory of the complex dielectric permeability tensor of an electron plasma in a magnetic field is developed by taking into account quantization of the electronorbital motion in a magnetic field. Transition to the classical and quasiclassical cases is investigated and the connection with some familiar results is established. The ...

The growth rate of the filamentation instability triggered when a diluted cold electron beam passes through a cold plasma is evaluated using the quantum hydrodynamic equations. Compared with a cold fluid model, quantum effects reduce both the unstable wave vector domain and the maximum growth rate. Stabilization of large wave vector ...

We present an approximation to the quantum Coulomb plasma at equilibrium which captures the power-law violations of Debye screening which have been reported in recent papers. The objectives are (1) to produce a simpler model which we will study in forthcoming papers, and (2) to develop a strategy by which the absence of screening can be proven for the ...

The quantum hydrodynamical model is employed to investigate the nonlinear properties of the quantum dust acoustic waves in a magnetized dusty plasma composed of inertialess electrons, ions, and mobile positive/negative charged dust particles. For this purpose, a quantum Zakharov-Kuznetsov equation is derived and ...

The quantum hydrodynamical model is employed to investigate the nonlinear properties of the quantum dust acoustic waves in a magnetized dusty plasma composed of inertialess electrons, ions, and mobile positive/negative charged dust particles. For this purpose, a quantum Zakharov-Kuznetsov equation is derived and ...

Linear and nonlinear properties of quantum dust acoustic waves are studied in a nonuniform, dissipative quantum plasma with sheared dust flow parallel to the ambient magnetic field, using the quantum hydrodynamic model. It is shown that the shear dust flow parallel to the external magnetic field can drive the ...

The one-dimensional quantum hydrodynamic model for a three-species quantum plasma is used to study the quantum counterpart of the well known dust ion-acoustic (DIA) wave. Two cases of physical interest are investigated, namely positive and negative dust charge. It is shown that only rarefactive solitary potentials ...

It is shown that a relative drift between the ions and the charged dust particles in a magnetized quantum dusty plasma can produce an oscillatory instability in a quantum dust acousticlike wave. The threshold and growth rate of the instability are presented. The result may explain the origin of low-frequency electrostatic fluctuations ...

It is shown that a relative drift between the ions and the charged dust particles in a magnetized quantum dusty plasma can produce an oscillatory instability in a quantum dust acousticlike wave. The threshold and growth rate of the instability are presented. The result may explain the origin of low-frequency electrostatic fluctuations ...

The existence of new electromagnetic drift modes in nonuniform quantum magnetoplasmas is predicted. For this purpose, new dispersion relations are derived by employing the quantum magnetohydrodynamic equation for plasmas without and with ion motions. The effects of electron corrections due to quantum fluctuations, ...

The stability of two quantum counterstreaming electron beams is investigated within the quantum plasma fluid equations for arbitrarily oriented wave vectors k. The analysis reveals that the two quantum two-stream unstable branches are indeed connected by a continuum of unstable modes with oblique wave vectors. ...

The arbitrary amplitude dust ion acoustic solitary waves are investigated in unmagnetized quantum plasmas. The quantum hydrodynamic model is employed with the Sagdeev potential approach to describe the nonlinear dust ion acoustic waves in dense Fermi plasmas. It is found that electron density dip structures are ...

Recently, Li [Phys. Plasmas 17, 082307 (2010)] has studied the effects of Bohm potential on interaction of nonplanar ion-acoustic solitary waves in an unmagnetized electron-positron-ion quantum plasma. In his work the extended reductive perturbation technique has been employed to reduce the basic quantum ...

The prevalent Landau damping theory for classical plasmas does not fully explain the Langmuir wave decay in dense plasmas. A dielectric function theory adapted from the condensed matter physics is extended to be applicable for the dense plasmas and warm dense matters. This theory, accounting for the Umklapp process, predicts much ...

The solution of the problem of all-optical (nonmagnetic) confinement of ultracold electron-ion neutral plasma based on selective action on plasma ions with quantum transition J=1?J=0 of so-called rectified radiation forces in a strong nonmonochromatic light field is suggested. The presented scheme of the three-dimensional dissipative ...

Tables are provided from which the local emissivities of spectrum lines arising from transitions between principal quantum shells of hydrogen-like and lithium-like ions in a plasma may be derived easily, subject to knowledge of the local plasma conditions...

An equation is derived which is a quantum mechanical analog of the classical collisionless Boltzmann equation. Qauantum corrections to the dispersion relation of longitudinal plasma oscillations are evaluated for a lowdensity plasma, and it is found that the leading centribution ( plus or minus - n-bar/sup 2/) is due to ...

A study is made of the static conductivity of a fully ionized plasma in a parameter range where the effect of electron-electron collisions can be ignored. It is shown that a convergent expression for the static conductivity of a fully ionized, weakly nonideal plasma in the range of large wave vectors can be obtained from a quantum ...

On the basis of the density response formalism an expression for the pseudopotential of dense semiclassical plasma, which takes account of quantum-mechanical effects, local field corrections, and electronic screening effects is obtained. The static structure factors taking into account both local fields and quantum-mechanical effects ...

a generalization to a quantum kinetic description. An important problem is the energy transfer between the plasma�like kinetic equations. It is a non�Markovian equation which conserves the full energy. The time dependent108 V/cm Fig. 1: Time evolution of the kinetic energy for different field strengths port properties

Strong correlation effects in classical and quantum plasmas are discussed. In particular, Coulomb (Wigner) crystallization phenomena are reviewed focusing on one-component non-neutral plasmas in traps and on macroscopic two-component neutral plasmas. The conditions for crystal formation in terms of critical values ...

A microscopic theory of gain in a group-III nitride quantum well laser is presented. The approach, which treats carrier correlations at the level of quantum kinetic theory, gives a consistent account of plasma and excitonic effects in an inhomogeneously broadened system.

This is another approach to the quantum mechanical treatment of finite temperature many particle systems. The two particle Slater sum has been established from its resolvent representation using the perturbation calculation of an e super 2 expansion. Subs...

The study of quantum liquids has led to ideas and concepts of broad applicability. I shall illustrate this by examples from the physics of liquid helium-3, heavy-fermion compounds, quark-gluon plasmas and cold atomic gases.

Methods of quantum field theory will be applied to prediction of atomic collision and reaction phenomena in gases and partially ionized plasmas, and of the effects of such processes on electromagnetic absorption and emission spectra. Better understanding ...

The quantum electromagnetic dielectric tensor for a multi-species plasma is re-derived from the gauge-invariant Wigner-Maxwell system and presented under a form very similar to the classical one. The resulting expression is then applied to a quantum kinetic theory of the electromagnetic filamentation instability. Comparison is made ...

The quantum effects on the polarization momentum transport scatterings are investigated in partially ionized dense hydrogen plasmas. The partial wave analysis is applied to represent the electron-atom polarization momentum transport cross section as a function of the de Broglie wavelength, Debye length, collision energy, and quantum ...

Two-dimensional, obliquely propagating nonlinear quantum dust-acoustic waves in dense magnetized plasmas are investigated on the basis of a quantum hydrodynamic model. In this regard, the Zakharov-Kuznetsov (ZK) equation is derived using the small amplitude approximation method. The extended hyperbolic tangent method is employed to ...

Two-dimensional, obliquely propagating nonlinear quantum dust-acoustic waves in dense magnetized plasmas are investigated on the basis of a quantum hydrodynamic model. In this regard, the Zakharov-Kuznetsov (ZK) equation is derived using the small amplitude approximation method. The extended hyperbolic tangent method is employed to ...

A nonlinear equation similar to the Hasegawa-Mima equation for drift waves in dense quantum plasmas has been obtained. Therefore, electrostatic drift vortices can appear in nonuniform dense magnetoplasmas. These nonlinear structures can be of dipolar form as well as street-type vortices. It is noticed that these structures are formed on very short spatial ...

We have developed a two dimensional code for simulating quantum plasmas (1). This unique code propagates many quantum particles forward in time self-consistently using the semi-classical approximation. Because of this it can model the statistical properties of interacting quantum particles. We are currently testing ...

Classical and quantum calculations are made of the r-f spectral coefficients, r-f absorption and emission coefficients, and r-f conductivity of plasma. It is assumed that the plasma is totally ionized, that no external magnetic fields exist, that the particles are nonrelativistic, and that the r-f radiation considered is so ...

This scheme is used to clarify the journal's scope and enable authors and readers to more easily locate the appropriate section for their work. For each of the sections listed in the scope statement we suggest some more detailed subject areas which help define that subject area. These lists are by no means exhaustive and are intended only as a guide to the type of papers we envisage appearing in ...

The propagation of one-dimensional shock-like waves (SLWs) in a dissipative quantum magnetoplasma medium is studied. A quantum magnetohydrodynamic (QMHD) model is used to take into account the effects of quantum force associated with the Bohm potential and the pressure-like spin force for electrons. It is shown that the nonlinear ...

The existence of small amplitude quantum ion-acoustic double layers is studied in an unmagnetized dense electron-positron-ion plasma. For this purpose, the quantum hydrodynamic model is employed to derive a deformed Korteweg-de Vries (dKdV) equation. The steady state double layer solution of dKdV equation is obtained and its dependence ...

A numerical and theoretical study is presented for the propagation of electron Bernstein modes in a magnetized quantum plasma. The dispersion relation for electrostatic waves is derived, using a semiclassical Vlasov model for Fermi-Dirac distributed electrons. The dispersion relation is checked numerically with direct Vlasov simulations, where the wave ...

Based on the one-body particle-antiparticle Dirac theory of electrons, a set of relativistic quantum fluid equations for a spin half plasma is derived. The particle-antiparticle nature of the relativistic particles is explicit in this fluid theory, which also includes quantum effects such as spin. The nonrelativistic limit is shown to ...

It is shown that spontaneous and piezoelectric polarization fields, inherent in GaN lattices, combined with constrained carrier motion along the quantum wells, give rise to equilibrium plasma nanosheaths. Induced potentials are localized within nm Debye lengths with peak voltages much larger than the thermal carrier energy. The associated energy ...

The three-dimensional extended quantum Zakharov-Kuznetsov (ZK) equation was investigated in dense quantum plasmas which arises from the dimensionless hydrodynamics equations describing the nonlinear propagation of the quantum ion-acoustic waves. With the aid of symbolic computation, many types of new analytical ...

The linear and nonlinear properties of the ion-acoustic waves (IAWs) are investigated by using the quantum hydrodynamic equations together with the Poisson equation in a three-component quantum electron-positron-ion plasma. For this purpose, a linear dispersion relation, a Korteweg-de Vries equation and an energy equation containing ...

Electrostatic drift waves (EDWs) are investigated in nonuniform quantum magnetized dusty plasmas by taking into account dust gravitational effects with the help of the quantum hydrodynamic model. Ions and electrons are viewed as low-temperature Fermi gases, whereas quantum effects are neglected for the dust grains. ...

... dielectric function is given by the quantum Lind- hard form, whereas the dielectric theory of Decker ... Rev. E 60 (1999) 4725. Decker et al. ...

... earth sensing, and flame/plasma characterization ... can neglect quantum confinement effects because the ... a good approximation for magnetic fields of ...

... We studied the time evolution of N-level quantum systems under ... properties of a quasienergy operator defined in an enlarged Hilbert space, or ...

Contents: Plasma physics and quantum electronics; Radioscience; Solid-state electronics; Systems theory; and Digital systems.

Contents: Plasma Physics and Quantum Electronics, Radioscience, Solid-State Electronics, Systems Techniques, Systems Theory, and Digital Systems.

... Descriptors : *PLASMAS(PHYSICS), *ELECTRONICS, REPORTS, QUANTUM THEORY, UPPER ATMOSPHERE, RADIO SIGNALS, SOLID STATE ...

... can give rise to the lateral static domains in the tunnel current, that in its turn results in the kinks in the region of the central arm of Z of the I- V curve. ...

... Part II. (Application of Floquet Theory to the Calculation of Resonance Frequencies and Dispersion Relations). Descriptive Note : Final rept.,. ...

Oblique interaction of small- but finite-amplitude KdV-type electron-acoustic solitary excitations is examined in an unmagnetized two-electron-populated degenerate quantum electron-ion plasma in the framework of quantum hydrodynamics model using the extended Poincar\\'{e}-Lighthill-Kuo (PLK) perturbation method. Critical ...

Attention is drawn to the insufficient validity of a number of conclusions concerning the fundamentals of statistical physics made in a paper of A M Tkachev and S I Yakovlenko [Quantum Electron. 30 1077 (2000)] (discussion)

... in quantum field theory; Observations of nuclear and cosmic radiation in the ocean; Beam and Plasma Physics-The half-lives of Cs137 and Co60. ...

... Title : Filter and Film Method of Measuring the Temperature of a Hot, Dense, Low-Z Plasma from Its Quantum Bremsstrahlung. ...

... nuclear distances. Guide experiments to identify transition from quantum chromodynamics to quark-gluon plasma. Accelerator ...

to the physics of neutron stars, to inhomogeneous quark{gluon plasma, and also to buckyballs (carbon{60 molecules

Contents: Semiconductors; Quantum electronics; Magnetism; Crystals; Superconductivity; Metals; Applied electromagnetics and plasmas; Information sciences; Control systems; Communication systems; Hybrid and digital computation; Biological engineering. (Aut...

Research topics in progress, recent findings, and future plans in the areas of biomedical electronics; information sciences; plasma and quantum electronics; solid state electronics; and acoustics and radio sciences are presented. (Author)

... a constant "plasma resonance frequency" exists despite the widely ... to finalize the design of the 100 kv gun. ... IV.A.2. Here coaxial input lines arc used ...

The quantum ion-acoustic waves in single-wall carbon nanotubes are studied with the quantum hydrodynamic model, in which the electron and ion components of the nanotubes are regarded as a two-species quantum plasma system. An analytical expression of the dispersion relation is obtained for the linear disturbance. ...

Surface plasmon polaritons (SPPs) have recently been recognized as an important future technique for microelectronics. Such SPPs have been studied using classical theory. However, current state-of-the-art experiments are rapidly approaching nanoscales, and quantum effects can then become important. Here we study the properties of quantum SPPs at the ...

A coupled dispersion relation of low frequency shear Alfven waves and electrostatic waves in a dense quantum magnetoplasma is derived by using hydrodynamic model. The dispersive contribution of electron quantum effects is discussed for dynamic as well as static ions. The dominant role of electron Fermi pressure is highlighted and its comparison with the ...

Hydrodynamics and collision-dominated transport are crucial to understand the slow dynamics of many correlated quantum liquids. The ratio eta/s of the shear viscosity eta to the entropy density s is uniquely suited to determine how strongly the excitations in a quantum fluid interact. We determine eta/s in clean undoped graphene using a ...

The oscillatory screening effects on the transition bremsstrahlung radiation due to the polarization interaction between the electron and shielding cloud are investigated in dense quantum plasmas. The impact-parameter analysis with the modified Debye-H�ckel potential is applied to obtain the bremsstrahlung radiation cross section as a function of the ...

A method is presented based on the theory of quantum damping, for deriving a self consistent but approximate form of the quantum transport for photons interacting with fully ionized electron plasma. Specifically, we propose in this paper a technique of approximately including the effects of background plasma on a ...

A method based on the theory of quantum damping is presented, for deriving a self consistent but approximate form of the quantum transport for photons interacting with a fully ionized electron plasma. Specifically, we propose in this paper a technique of approximately including the effects of background plasma on a ...

An improved nonrelativistic calculation, based on the quantum Lenard-Balescu transport equation, is performed for the thermal and electrical conductivity of a plasma of highly degenerate, weakly coupled electrons and nondegenerate, weakly coupled ions. Dy...

The kinetic equation to be solved to calculate the conductivity of low- density high-temperature and high-density low-temperature plasmas is given, and the method for calculating the transport coefficients are indicated. Quantum statistics is not considered. (L.N.N.)

The time-independent slowing-in distribution is evaluated for a fast beam of test particles released in an infinite Maxwellian plasma background for various situations including quantum-mechanical and classical scattering regimes. The analysis involves co...

The response function (inverse dielectric function) for an electron gas in an external magnetic field is investigated by the method of Green's functions using the random phase approximation. The spectrum of plasma oscillations, and associated damping, are...

The propagation of X-ray frequency waves in a plasma with an extremely strong magnetic field (approx. 10 exp 12 G) is considered. Vacuum polarisation and thermal effects are included, as are first order quantum corrections. Approximate analytic solutions ...

By using the traditional perturbation method, we obtain the nonlinear Schrodinger equation for one-dimensional Schr�dinger-Poisson system. Some of its solutions can explain previous results.

The scattering of an electron beam injected into a plasma is described by Moliere's theory of multiple collisions. Such a theory has the unique advantages of including multiple as well as single scattering, being quantum mechanically correct from the outs...

The purpose of this investigation was to examine the early relaxation of the population density distribution of a thermal hydrogen plasma. The system of rate equations describing the transient behavior of all quantum levels was used and solved numerically...

We discuss the radiative corrections to the production of lepton pairs in a quark-gluon plasma at finite temperature. The real-time formalism is used throughout the calculations. We show that both infrared and mass singularities cancel in the final result...

The incoherent scattering of radio waves from a hot plasma is computed using the diagrammatic techniques of quantum electrodynamics. This method simplifies previously obtained results and permits extensions to include the effects of close collisions. (auth)

Quantum Optics, Atomic, Molecular and Plasma Physics Division Meeting, Open University, Milton Keynes. Dr Optics, Atomic, Molecular and Plasma Physics Division Meeting, Open University, Milton Keynes. Dr Wright of Astronomy and Geophysics, Encyclopedia of Astronomy and Astrophysics, Solar Physics, Geophysical

A brief review is given of the quantum statistical theory of strongly coupled many component reacting plasmas. It is shown that three distinct renormalizations of the many component activity series are required to obtain an expansion, which can properly h...

Screening of the Coulumb interaction accounting for the Friedel oscillations in the structures with multicomponent low-dimensional electron plasma is considered. Calculations are made for nanotubes, double quantum wells (DQW) and superlattices. The binding energy of a donor in DQW is found as a function of the subbands occupation numbers.

Effective emission and ionization rate coefficients of carbon atoms taking into account the density effects in plasmas are studied using a collisional radiative model including 31 sub-levels up to the principal quantum number n = 4. Atomic processes such ...

Classical field equations are derived from quantum fields to obtain a different and possibly simpler description of a collisionless plasma. The method is to take the simultaneous limit, Dirac constant, e, m implies 0, of charged scalar fields and the elec...

This paper investigates the bremsstrahlung in plasmas from the point of view of quantum statistics, thus elminating the divergence which exists in the classical theory. We have treated the ion screening effect rather rigorously and obtained an expression clearly showing its influence. Finally, the corresponding absorption coefficient is given.

Theoretical calculations were made of the electron reflectivity for quantum mechanical models of the surface dipole layer. Research on plasma theory is summarized including the modification of the plasma program to include electron temperature gradient it...

We examine developments in the study of quantum turbulence with a special focus on clearly defining many of the terms used in the field. We critically review the diverse theoretical, computational, and experimental approaches from the point of view of experimental observers. Similarities and differences between the general properties of classical and ...

The dynamical behavior of the nonlinear interaction of quantum Langmuir waves (QLWs) and quantum ion-acoustic waves (QIAWs) is studied in the one-dimensional quantum Zakharov equations. Numerical simulations of coupled QLWs and QIAWs reveal that many coherent solitary patterns can be excited and saturated via the modulational ...

Cylindrical and spherical deformed Korteweg-de Vries (dKdV) equations are derived for quantum ion acoustic waves in an unmagnetized two species quantum plasma system, comprised of electrons and ions, by the reductive perturbation technique in the weakly nonlinear limit. The properties of quantum ion acoustic ...

Quantum screening effects on the occurrence time advance or delay for elastic collisions in electron-positron plasmas are investigated using the corrected Kelbg potential taking into account the classical effect as well as the quantum-mechanical effect. The eikonal method is applied to obtain the scattering amplitudes for ...

Core/shell quantum dots (CdSe/Zns) conjugated with various nuclear localization signaling (NLS) peptides, which could facilitate the transportation of quantum dots across the plasma membrane into the nucleus, have been utilized to investigate the uptake mechanism of targeted delivery. Because of their brightness and photostability, it ...

The theory of stimulated Thomson scattering is investigated both quantum mechanically and classically. Two monochromatic electromagnetic waves of like polarization travelling in opposite directions are allowed to interact for a time tau with the electrons in a collisionless plasma. The electromagnetic waves have frequencies well above the ...

The linearized potential of a moving test charge in a one-component fully degenerate fermion plasma is studied using the Lindhard dielectric function. The motion is found to greatly enhance the Friedel oscillations behind the charge, especially for velocities larger than half of the Fermi velocity, in which case the asymptotic behavior of their amplitude changes from 1/r3 to ...

The radiative and quantum effects in laser plasmas are discussed. The self-consistent numerical model based on particle-in-cell and Monte-Carlo methods are developed. First we analyze the spectra of Compton backscattered photons and betatron radiation in the classical and quantum regimes. Then we address an interaction between intense ...

This paper discusses the existence of ion-acoustic solitary waves and their interaction in a dense quantum electronpositron�ion plasma by using the quantum hydrodynamic equations. The extended Poincar�Lighthill�Kuo perturbation method is used to derive the Korteweg-de Vries equations for quantum ...

Linear and nonlinear propagation characteristics of quantum drift ion acoustic waves are investigated in an inhomogeneous two-dimensional plasma employing the quantum hydrodynamic (QHD) model. In this regard, the dispersion relation of the drift ion acoustic waves is derived and limiting cases are discussed. In order to study the drift ...