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Thermodynamic properties of hydrogen-helium plasmas.Calculation of the thermodynamic properties of an atomic hydrogen-helium plasma for postulated conditions present in a stagnation shock layer of a spacecraft entering the atmosphere of Jupiter. These properties can be used to evaluate transport properties, to calculate convective heating, and to investigate nonequilibrium behavior. The calculations have been made for temperatures from 10,000 to 100,000 K, densities of 10 to the minus 7th and .00001 g cu cm, and three plasma compositions: pure hydrogen, 50% hydrogen/50% helium, and pure helium. The shock layer plasma consists of electrons, protons, atomic hydrogen, atomic helium, singly ionized helium, and doubly atomized helium. The thermodynamic properties which have been investigated are: pressure, average molecular weight, internal energy, enthalpy, entropy, specific heat, and isentropic speed of sound. A consistent model was used for the reduction of the ionization potential in the calculation of the partition functions.
Document ID
19720037932
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nelson, H. F.
(Missouri, University Rolla, Mo., United States)
Date Acquired
August 6, 2013
Publication Date
March 1, 1972
Publication Information
Publication: Journal of Spacecraft and Rockets
Volume: 9
Subject Category
Thermodynamics And Combustion
Accession Number
72A21598
Funding Number(s)
CONTRACT_GRANT: NGR-26-003-055
Distribution Limits
Public
Copyright
Other

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