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Comparison of measured and theoretical inverse bremsstrahlung and photoionization absorption of infrared radiation in a H-He plasma.The absorption coefficients of 1.15- and 3.39-micrometer radiation for a homogeneous H-He plasma have been measured in a temperature and electron density range where the major absorption mechanisms are electron-ion inverse bremsstrahlung and neutral-atom photoionization. Measurements were made behind both the incident and reflected shock waves in a driven tube by recording the laser intensity transmitted along the tube diameter as a function of time. The measured values compare well with those obtained from theoretical calculations for a gas in thermodynamic equilibrium.
Document ID
19720047856
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Billman, K. W.
Stallcop, J. R.
Rowley, P. D.
Presley, L. L.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
May 29, 1972
Publication Information
Publication: Physical Review Letters
Volume: 28
Subject Category
Physics, Plasma
Accession Number
72A31522
Distribution Limits
Public
Copyright
Other

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