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Title Electron Impact Excitation Cross Section Measurement for n=3 to n=2 Line Emission in Fe17+ to Fe23+
Creator/Author Chen, H ; Beiersdorfer, P ; Brown, G V ; Scofield, J ; Gu, M F ; Kahn, S M ; Boyce, K ; Kelley, R ; Kilbourne, C ; Porter, F S
Publication Date2006 Apr 20
OSTI IdentifierOSTI ID: 895717
Report Number(s)UCRL-PROC-220791
DOE Contract NumberW-7405-ENG-48
Other Number(s)TRN: US200711%%283
Resource TypeConference
Resource RelationConference: Presented at: NASA 2006 Laboratory Astrophysics Workshop, Las Vegas, NV, United States, Feb 14 - Feb 16, 2006
Research OrgLawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring OrgUSDOE
Subject74 ATOMIC AND MOLECULAR PHYSICS; ASTROPHYSICS; CROSS SECTIONS; ELECTRON BEAMS; ELECTRON CAPTURE; ELECTRONS; EXCITATION; IRON; L SHELL; NASA; SPACE FLIGHT; SPECTROMETERS
Description/AbstractWe have measured the electron impact excitation cross sections for the strong iron L-shell 3 {yields} 2 lines of Fe XVIII to Fe XXIV at the EBIT-I electron beam ion trap using a crystal spectrometer and NASA-Goddard Space Flight Centers 6 x 6 pixel array microcalorimeter. The cross sections were determined by direct normalization to the well established cross section of radiative electron capture through a sophisticated model analysis which results in the excitation cross section for the strong Fe L-shell lines at multiple electron energies. This measurement is part of a laboratory X-ray astrophysics program utilizing the Livermore electron beam ion traps EBIT-I and EBIT-II.
Country of PublicationUnited States
LanguageEnglish
FormatMedium: ED; Size: PDF-file: 6 pages; size: 0 Kbytes
System Entry Date2008 Feb 14
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