Beamline U2B
Research Program - Mid-infrared microspectroscopy of materials
Ring - VUV-IR Port
Status - Fully Operational
Time Dedicated to NSLS
General User Program -
50%
National Synchrotron Light Source
Lisa Miller: 631.344.2091, lmiller@bnl.gov
Randy Smith: 631.344.8033, rsmith@bnl.gov
Eli Stavitski: 631.344.5910, istavitski@bnl.gov
- Spectrometer endstation: Thermo Nicolet Magna 860 Step-Scan FTIR and Continuum IR microscope
- Frequency Range (cm-1): 500 - 4000
- Spectral resolution (cm-1): 4.0
- Spatial resolution: diffraction-limit (i.e. ~ 3 to 10 microns)
- Brightness (compared to a black body): 100x to 1000x
- Smallest practical targeting aperture size: 3 microns square
- Beamline angular acceptance: (milliradians): 40H x 40V (100% vertical collection down to 240 cm-1)
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 and transported under rough vacuum through a KBr window and into the nitrogen-purged, Thermo Scientific endstation.
Thermo Magna 860 Step-Scan FTIR equipped with CaF2, KBr, and Si beamsplitters and an internal DTGS-KBr detector. Thermo Continuum IR microscope equipped with 32x transmission/reflection IR objective. "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.
Data collection: Intel Pentium VI, 3.4 GHz computer running Windows XP; 2.0 GB RAM, 150 GB hard disk, 17" flat panel monitor; Data analysis: Intel Pentium VI, 3.0 GHz computer running Windows XP; 2.0 GB RAM, 80 GB hard disk, two 17" flat panel monitors. Software includes Thermo Omnic 7.4 with 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 USB flash drive or external hard drive.
- Safety Checklist
- BLOSA form
- Configuration Control
- Beamline Guide, Quick troubleshoot guide
- Omnic Manual: version 7.4
- Atlus Manual: version 7.4
This page last updated by Lisa Miller on August 16, 2011. Disclaimers.