Infrared microspectroscopy with synchrotron radiation
- Brookhaven National Laboratory, Upton, NY (United States)
Synchrotron radiation is around 1000 times brighter than conventional globar infrared sources in the chemical {open_quotes}fingerprint{close_quotes} region from 1000-5000 cm-1 (2-10 microns). The authors have coupled an infrared beam from the National Synchrotron Light Source as an external source into a Spectra-Tech IRus microspectrometer. Since this instrument uses Cassegranian optics at approximately f/1 at the sample, while the NSLS source is at f/100, the latter is demagnified by 100:1 so that the 1mm source is imaged at 10 microns. Using redundant aperturing it is found that spectroscopy can be performed with a spatial resolution at the diffraction limit with excellent signal to noise in 15 seconds for the entire range from 800-5000 cm-1 using FTIR techniques. The authors will discuss the performance of this instrument in detail and will then present examples of the application of this facility to industrial problems ranging from photographic film to electronic circuits.
- OSTI ID:
- 191744
- Report Number(s):
- CONF-941098--
- Country of Publication:
- United States
- Language:
- English
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