Document Detail


Automation of long-path absorption cell measurements.
MedLine Citation:
PMID:  18699344     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Recent advances have been made in the operation of long-path absorption cells which make them easier to align and improve the accuracy of measurements made with them. Only one person is required now for routine measurements of low absorption coefficients of atmospheric absorbers. Unique gear designs for the adjustment of the cell mirrors are described which utilize low-torque linear drives and make possible rapid changes in pathlength and precision repositioning of the cell output beam at long pathlengths. Automation of cell operation by the use of remote Selsyn controls is described. Several techniques are discussed for precision optical alignment of long-path absorption cells, including the use of infrared radiation sources. The system accuracy which results from these refinements in operation is included.
Authors:
W R Watkins; R G Dixon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  50     ISSN:  0034-6748     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  1979 Jan 
Date Detail:
Created Date:  2008-08-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  86     Citation Subset:  -    
Affiliation:
US Army Atmospheric Sciences Laboratory, White Sands Missile Range, New Mexico 88002.
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