| GENERAL INFORMATION |
| Research Program - Mid-infrared microspectroscopy of materials |
| Ring - VUV-IR Port |
| Status - Fully Operational |
| Time Dedicated to NSLS General
User Program - 75% |
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| PARTICIPATING INSTITUTIONS |
| National Synchrotron Light Source |
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| SPOKESPERSON |
Lisa Miller: 631.344.2091, lmiller@bnl.gov
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| LOCAL CONTACT |
| Randy Smith: 631.344.8033, rsmith@bnl.gov |
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| INSTRUMENT |
- Spectrometer endstation: Nicolet Magna 860
Step-Scan FTIR and Spectra Tech Continuum IR
microscope
- Frequency Range (cm-1): 500 - 4000
- Spectral resolution (cm-1): 2.0
- Spatial resolution: diffraction-limit (i.e.
~ 3 to 10 microns)
- Brightness (compared to a black body): 100x
to 1000x
- Smallest practical targeting aperture size:
2 microns square
- Beamline angular acceptance: (milliradians):
40H x 40V (100% vertical collection down to
240 cm-1)
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| OPTICAL CONFIGURATION |
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A two-mirror system (M1 and M2) collects and re-images the
synchrotron infrared source at a point just outside of the
storage ring's UHV. M1 is a water-cooled plane mirror made from
silicon with a gold reflective coating. M2 is a glass ellipsoid
with an aluminum reflective coating. The ellipsoidal mirror
focuses the beam through an 11mm aperture wedged diamond window
(~350 microns thick). Delivered spectral range extends from
approximately 10 cm-1 to beyond 40,000 cm-1. The infrared is
then collimated to a diameter of 14mm or 8mm and transported
under rough vacuum through a KBr (or polyethylene) window and
into the nitrogen-purged, Nicolet endstation.
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| EXPERIMENTAL APPARATUS |
| Nicolet Magna 860 Step-Scan FTIR equipped with
CaF2, KBr, and Si beamsplitters and an internal
DTGS-KBr detector. Spectra Tech Continuum IR microscope
equipped with 32x transmission/reflection, ATR,
and grazing angle IR objectives. "View-thru"
capability allow simultaneous sample viewing and
IR data collection. One glass objective (10X plan)
for visual inspection. DIC and fluorescence microscopy
capabilities. IR and visible polarizers. Automated
X-Y scanning stage for spectroscopic mapping. Includes
video image capture of sample specimen. Step resolution
of 1 micron. Small area MCT-A, MCT-B detectors.
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| COMPUTER SYSTEM HARDWARE AND SOFTWARE |
| Intel Pentium VI, 2.0 GHz computer running Windows
2000; 1.0 GB RAM, 80 GB hard disk, 17" flat
panel monitor; Software includes Nicolet Omnic E.S.P.
and Atlus mapping. HP LaserJet 1100 (B&W) printer
for hardcopy output. Software for converting data
into simple (ascii) X,Y data format. Data can be
stored on disk using 3.5" floppy drive, 100
MB Zip drive, and CD-ROM burner. |
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