Photon Sciences   |   Brookhaven National Laboratory

X19A External Website

Beamline X19A

  • General Information

    • Source Type
      Bending magnet

      Status
      Operational

      General User Beamtime
      50%

      Energy Range Category
      Hard X-Ray (1-50 keV)

      Energy Range
      2.1-17 keV

      Beamline Type
      Facility Beamline

      Technique(s)
      X-ray scattering, resonant
      X-ray absorption spectroscopy
      X-ray absorption spectroscopy, extended fine structure
      X-ray absorption spectroscopy, fine structure
      X-ray absorption spectroscopy, near edge fine structure
      X-ray absorption spectroscopy, near edge structure

      Institution(s)
      Brookhaven National Laboratory Chemistry
      Brookhaven National Laboratory Electrochemistry
      NSLS
      ORNL
      Pacific Northwest National Laboratory
      UOP LLC
      University of Delaware
      Yeshiva University

      Research Types
      X-ray absorption spectroscopy in biology, chemistry, physics, geology, environmental sciences & nanoparticles. Resonant x-ray diffraction of free standing liquid crystal films. Through SCC, temperature programmed gas treatment with RGA analysis.

  • Contact Information

    • Spokesperson The person from each beamline who acts as a contact point between the beamline management and NSLS administration. Contact for questions about the beamline scientific program, experimental capabilities, and beamline management.
      Syed Khalid, Brookhaven National Laboratory, khalid@bnl.gov, 344-7496

      Local Contact The beamline staff member who is typically responsible for overseeing the daily operation and maintenance of the beamline. Contact for questions about beamline instrumentation, experimental details, and training.
      Syed Khalid, Brookhaven National Laboratory, khalid@bnl.gov, 344-7496
      Nebojsa Marinkovic, University of Delaware, marinkov@bnl.gov, 6313443808

      Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
      Syed Khalid, Brookhaven National Laboratory, khalid@bnl.gov, 344-7496

      Beamline Phone
      631-344-5619

  • Instrumentation

    • Beamline Characteristics

      Energy RangeMono Crystal or GratingResolution (ΔE/E)FluxSpot Size (mm)Total Angular Acceptance (mrad)
      2.1 – 16.5 keV Si(111) 2 x 10-4 5 x 1010 ph/sec (@ 2.5 keV); 1 x 1011 ph/sec (@ 10 keV) 2H x 1V 3

      Source Type
      Bending magnet

      Optical System
      Mirror 1: Spherical (collimating) mirror, Rh-coated glass, 3 mrad incident angle. Monochromator: Double-crystal fixed-exit monochromator with feedback on second crystal. Mirror 2: Toroidal (focusing) mirror, Rh-coated glass. Be window: 10 µm thin Be-window.

      Experimental Apparatus
      He-purged sample-chamber with Fluorescence detector (Canberra PIPS-detector) inside the chamber; Closed-cycle cryostat with special chamber to mount PIPS-detector inside vacuum. Through SCC, temperature programmed gas treatment of samples with RGA analysis. Radiation hutch with exhaust system for toxic emissions; HEPA filter for nano materials, ion chambers; fluorescence detectors(PIPS, Lytle, 13-element Ge detector, 4-element Si-drift Vortex detector), multi-channel analyzer; x-z stage sample positioner.

      Computer System Hardware & Software
      Pentium PC, Windows operating system, Labview XDAC-software now compatible to EPICS to operate beamline and to collect data; VME Crate; Computer for data analysis (WinXas, Athena, Artemis, FEFF) available.
  • Links