A Caltech Library Service

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. doi:10.1063/1.1722319.

[img] PDF - Reprint
See Usage Policy.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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:
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
Funding AgencyGrant Number
Office of Naval Research (ONR)Nonr-220(03), NR 015 401
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center 72
Issue or Number:2
Record Number:CaltechAUTHORS:20110126-072952200
Persistent URL:
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
Deposited By: Ruth Sustaita
Deposited On:26 Jan 2011 16:09
Last Modified:09 Nov 2021 16:01

Repository Staff Only: item control page