Abstract

The accuracy of spectroscopic absorptance measurements can be seriously affected by the presence of absorbing species in the atmosphere anywhere in the optical train. The error is due to the band-pass nature of a monochromator, and therefore is just as severe when a double-beam spectrometer is used as when a single-beam spectrometer is used.

Using a method recently developed by Sakai for the calculation of the integrated absorptance of a pair of overlapping absorption lines, we have calculated the error in the measured integrated absorptance of a sample gas which contains H2O or CO2. The method used places no restrictions on the half-width or strength of either line. Factors have been derived for correcting the measured absorptance in a number of experimentally important cases. The calculated correction factors give results which are in good agreement with experiments made using a spectrometer in which the atmospheric H2O and CO2 were removed from the optical train.

© 1964 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Use of the Curtis–Godson Approximation in Calculations of Radiant Heating by Inhomogeneous Hot Gases

Burton Krakow, Harold J. Babrov, G. Jordan Maclay, and Abraham L. Shabott
Appl. Opt. 5(11) 1791-1800 (1966)

Self-Broadening Effects in the Infrared Bands of Gases*

A. Anderson, An-Ti Chai, and Dudley Williams
J. Opt. Soc. Am. 57(2) 240-246 (1967)

Quantitative Studies of HNO3 Vapor Absorption in the 1700–2636-Å Wavelength Region

S. C. Schmidt, A. Goldman, F. S. Bonomo, D. G. Murcray, and R. C. Amme
Appl. Opt. 13(5) 1202-1208 (1974)

References

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
Login to access OSA Member Subscription

Cited By

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
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables 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
Login to access OSA Member Subscription

Equations (29)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription