Document Detail


Development of a stabilized low temperature infrared absorption cell for use in low temperature and collisional cooling experiments.
MedLine Citation:
PMID:  15561634     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have constructed a stabilized low temperature infrared absorption cell cooled by an open cycle refrigerator, which can run with liquid nitrogen from 250 to 80K or with liquid helium from 80K to a few kelvin. Several CO infrared spectra were recorded at low temperature using a tunable diode laser spectrometer. These spectra were analyzed taking into account the detailed effects of collisions on the line profile when the pressure increases. We also recorded spectra at very low pressure to accurately model the diode laser emission. Spectra of the R(2) line in the fundamental band of 13CO cooled by collisions with helium buffer gas at 10.5K and at pressures near 1 Torr have been recorded. The He-pressure broadening parameter (gamma(0) = 0.3 cm(-1) atm(-1)) has been derived from the simultaneous analysis of four spectra at different pressures.
Authors:
A Valentin; A Henry; C Claveau; C Camy-Peyret; D Hurtmans; A W Mantz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy     Volume:  60     ISSN:  1386-1425     ISO Abbreviation:  Spectrochim Acta A Mol Biomol Spectrosc     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-11-24     Completed Date:  2005-05-03     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  9602533     Medline TA:  Spectrochim Acta A Mol Biomol Spectrosc     Country:  England    
Other Details:
Languages:  eng     Pagination:  3477-82     Citation Subset:  IM    
Affiliation:
Laboratoire de Physique Moléculaire et Applications, Université P. et M. Curie et CNRS, 4 Place Jussieu, Tour 13, Case 76, F-75252 Paris Cedex 05, France.
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MeSH Terms
Descriptor/Qualifier:
Argon
Carbon Isotopes
Carbon Monoxide / chemistry
Chemistry Techniques, Analytical / instrumentation*
Cold Temperature
Helium
Spectrophotometry, Infrared / instrumentation
Chemical
Reg. No./Substance:
0/Carbon Isotopes; 630-08-0/Carbon Monoxide; 7440-37-1/Argon; 7440-59-7/Helium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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