Abstract

The emissivities of the two bands of water vapor at 1.9 and 2.7 μ were determined at elevated temperatures. Use was made of quartz absorption cells of various lengths, which were heated in an electrical furnace to a temperature of 1200°K. By applying the “statistical” spectral-band model at every frequency in low-resolution spectra (8 cm−1), it was possible to obtain the band parameters x/L and 2πγ0/d and thus to correlate the observed spectral absorptance with the optical path length and the pressure of the gas. From absorptance measurements in the “linear region” the absolute intensity of the bands was derived. The total emissivity was calculated as a function of path length and pressure, and good agreement was obtained with direct observations of total emissivity at 1200°K.

© 1965 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Statistical Model Applied to the Region of the ν3 Fundamental of CO2 at 1200°K*

U. P. Oppenheim and Y. Ben-Aryeh
J. Opt. Soc. Am. 53(3) 344-350 (1963)

Some Spectral Emissivities of Water Vapor in the 2.7-μ Region*

Richard H. Tourin
J. Opt. Soc. Am. 51(11) 1225-1228 (1961)

Spectral Emissivities and Integrated Intensities of the 2.7- μ CO2 Band between 1200° and 1800°K*

C. C. Ferriso and C. B. Ludwig
J. Opt. Soc. Am. 54(5) 657-662 (1964)

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 (12)

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 (3)

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 (15)

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