OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 51, Iss. 12 — Dec. 1, 1961
  • pp: 1351–1356

Further Studies of Pressure-Modulated Infrared Absorption

RICHARD R. PATTY and DUDLEY WILLIAMS  »View Author Affiliations


JOSA, Vol. 51, Issue 12, pp. 1351-1356 (1961)
http://dx.doi.org/10.1364/JOSA.51.001351


View Full Text Article

Acrobat PDF (650 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A "pressure modulator" has been constructed for use in studies of modulated infrared emission and absorption spectra. The modulator provides sinusoidal variation of the volume of a gas sample at a frequency of 8 cps with compression ratios of 2:1, 3:1, 4:1, 5:1, and 6:1. The general results obtained in grating studies of the fundamental and first-overtone absorption bands of carbon monoxide can be satisfactorily interpreted on the basis of an adiabatic modulation cycle, although detailed checks of the expected behavior for transitions between high rotational states were not entirely successful. In the adiabatic modulation of a gas for which γ = 1.66, temperatures as high as 640°K and as low as 225°K are attained in the present modulator with a compression ratio of 5:1 without raising the cell temperature more than 45 K deg above room temperature.

Citation
RICHARD R. PATTY and DUDLEY WILLIAMS, "Further Studies of Pressure-Modulated Infrared Absorption," J. Opt. Soc. Am. 51, 1351-1356 (1961)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-51-12-1351

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited