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An equation that describes material outgassing for contamination modelingA generalization of the Clausius-Claperon equation for vapor pressure is made for an outgassing material. The expression is derived using Langmuir's equation for the outgassing rate of a material and using an empirical equation for the vapor pressure of a material as a function of its molecular weight and temperature. Also, outgassing rate equations are derived in terms of the vapor pressure of the outgassing material for three general geometries.
Document ID
19770017250
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Heslin, T. M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1977
Subject Category
Chemistry And Materials (General)
Report/Patent Number
G-7702-F5
NASA-TN-D-8471
Report Number: G-7702-F5
Report Number: NASA-TN-D-8471
Accession Number
77N24194
Funding Number(s)
PROJECT: RTOP 310-992-68-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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