Cool Spectroscopy Using High Resolution Fourier Transform Infrared Spectroscopy

Conference · Tue May 08 00:00:00 EDT 2001

OSTI ID:949179

Sams, Robert L; Blake, Thomas A; Sharpe, Steven W

The PNNL FTIR-jet spectrometer system incorporates a continuous expansion, 12 cm x 50 micron expansion source pumped by a high throughput (6000 liter/sec) system of Roots blowers. The interaction region between the supersonic expansion and infrared radiation has been multi passed to increase the signal to noise. Rotational cooling temperatures of 10-15 K are routinely achieved. The FTIR-jet spectrometer has extensive spectral coverage form 4000 to 400 cm-1. To demonstrate the system's performance, a number of test cases including fluorocarbons, nitrous oxide monomer, nitrous oxide dimer, carbon dioxide monomer, carbon dioxide dimer, and other weakly bonded molecules will be presented.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 949179
• Report Number(s): PNNL-SA-33750; 3441; KP1504020; TRN: US200907%%352
• Resource Relation: Conference: Fourier Transform Spectroscocpy, OSA Trends in Optics and Photonics, 51:paper FThB2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FOURIER TRANSFORM SPECTROMETERS
SIGNAL-TO-NOISE RATIO
COOLING SYSTEMS
GAS ANALYSIS
RESOLUTION
Environmental Molecular Sciences Laboratory