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Emissivity of hydrogen atoms at high temperatures

Aroeste, Henry and Benton, William C. (1956) Emissivity of hydrogen atoms at high temperatures. Journal of Applied Physics, 27 (2). pp. 117-121. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:20110126-072952200

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Abstract

A method is described for making estimates of the total emissivity of hydrogen in the temperature and pressure ranges where hydrogen atoms predominate under equilibrium conditions. For a typical geometrical depth of 50 cm, and temperatures of the order of 12 500ºK and higher, with pressures of the order of 100 atmos and higher, the emissivity approaches unity (є≳0.95), while for temperatures of the order of 9500ºK and lower, with pressures of the order of 10 atmos and lower, the emissivity approaches zero (є≾0.05). The variations of the emissivity between these approximate limits are shown graphically as functions of temperature and pressure with the geometrical depth set at 50 cm. The variation of the emissivity with geometrical depth is also shown graphically at 12 600ºK and 20 atmos.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.1722319 DOIUNSPECIFIED
http://jap.aip.org/resource/1/japiau/v27/i2/p117_s1PublisherUNSPECIFIED
http://link.aip.org/link/JAPIAU/v27/i2/p117/s1 PublisherUNSPECIFIED
Additional Information:© 1956 American Institute of Physics. Received August 12, 1955. Online Publication Date: 14 May 2004. This article uses, in part, the results of a thesis submitted by William C. Benton, Major, U. S. Marine Corps, in partial fulfillment of requirements for the degree of Aeronautical Engineer, California Institute of Technology, June, 1955. Supported by the Office of Naval Research under Contract Nonr-220(03), NR 015 401.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)Nonr-220(03), NR 015 401
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center UNSPECIFIED
Record Number:CaltechAUTHORS:20110126-072952200
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110126-072952200
Official Citation:Emissivity of Hydrogen Atoms at High Temperatures Henry Aroeste and William C. Benton J. Appl. Phys. 27, 117 (1956); doi:10.1063/1.1722319
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21893
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Jan 2011 16:09
Last Modified:26 Dec 2012 12:52

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