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GENERAL INFORMATION
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National Synchrotron Light Source | |
Carnegie Institution of Washington, Geophysical Laboratory |
- Zhenxian Liu (CIW) (631) 344-5502; zxliu@bnl.gov
Russell J. Hemley (CIW) (202) 478-8951; hemley@gl.ciw.edu
OPTICAL CONFIGURATION
U2 is an infrared port delivering at least 80 milliradians horizontally by 40 milliradians vertically. The beam is extracted through a wedged diamond window, then divided into two equal beam lines, U2A and U2B. Each line has a Michelson interferometer, U2A a Bruker 66v/S vacuum bench with a nitrogen-purged Bruker microscope and custom optics; U2B a Nicolet Magna operated in vacuum with a custom measuring chamber.
Total Angular Acceptance: 45H x 45V mrad.
Mirror: Water-cooled silicon carbide beam extraction; beam is steered and focused by a combination of ellipsoidal and planar mirrors to provide a 1:1 image of the source. Beam passes through a wedged diamond window and continues through rough vacuum and then through another diamond window and into the evacuated or nitrogen-purged instrumentation for U2A.
Bruker 66v/S vacuum FTIR |
Bruker IRscope II |
Custom
IR microscopes
Long
working distance (40 mm) that can be used for near- to mid-IR absorption
and reflectivity measurements with diamond cells inside cryostats and furnaces
(to above 200 GPa). Near- to Far-IR vacuum microscope for routine high-pressure (diamond-cell) spectroscopy and microspectroscopy.
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Visible
Spectrograph
Frequency
Range: 0 - 1300 nm mechanical range (300 and 1500g/mm gratings)
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Lasers
Coherent
Innova 90 plus Argon ion laser
Coherent
Titanium-Sapphire Tunable Laser
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Data acquisition:
Pentium III, 350 MHz computer running Windows
2000 professional; 3.5" floppy drive; CD-RW drive; 100
MB Zip drive; Laser Jet 2100TN printer
NSLS Home Page............BNL Home Page...............IR Home Page
This page was last updated by Zhenxian Liu on May 10, 2003.
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