Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-26T04:33:12.807Z Has data issue: false hasContentIssue false
  • English
  • Français

Radiative behaviour of a shock-heated argon plasma flow

Published online by Cambridge University Press:  13 March 2009

K. P. Horn ,
H. Wong  and
D. Bershader
K. P. Horn
Affiliation:
Stanford University, Stanford, California
H. Wong
Affiliation:
Stanford University, Stanford, California
D. Bershader
Affiliation:
Stanford University, Stanford, California
Get access Rights & Permissions [Opens in a new window]

Abstract

Experimental and theoretical studies were made of the decrease in the degree of ionization of shock-heated agron resulting from radiative emission. the studies were based on measurment of the time history of the electron density by means of optical interferometry used in conjunction with a rotating mirror camera. These measurments apply to the quasi-euilibrium region which follows the short electronic relaxation zone behind strong shocks. Loss of energy by rediation led to cooling of the gas as evidenced by the decreasing electron density. The analytical studies were based on the assumption that the dense plasma readiated throught both continuu, emission and emission from spectral lines. Comparison was made with experimental results, and theory and experiment were in good agreement, for a realistic choice of the parameters contained in the continuum theory. The analysis indicated that line radiation losses could not be disregarded. Sizeable loss resulted from lower level bound-bound transitions even though these lines experienced absorption.

Type
Research Article
Information
Journal of Plasma Physics , Volume 1 , Issue 2 , May 1967 , pp. 157 - 170
Copyright
Copyright © Cambridge University Press 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Alpher, R. A. & White, D. R. 1959 Phys. Fluids 2, 162.Google Scholar
Alpher, R. A. & White, D. R. 1964 Phys. Fluids 7, 1239.Google Scholar
Bates, D. R. & Damgaard, A. 1949 Phil. Trans. R. Soc. A 242, 101.Google Scholar
Biberman, L. M. & Yakubov, I. T. 1964 J. Quant. Spectorsc. Radiat. Transfer 3, 221.Google Scholar
Biberman, L. M. & Yakubov, I. T. 1964 Sov. Phys. -Tech. Phys. 8, 1001.Google Scholar
Bond, J. W. 1957 Phys. Rev. 105, 1683.Google Scholar
Doherty, L. R. 1961 Ph. D. Thesis, University of Michigan.Google Scholar
Dronov, A. P., Sviridov, A. G. & Sobolev, N. N. 1962 Optics & Spectroscopy 12, 383.Google Scholar
Garstang, R. H. & Van Blerkom, J. 1965 J. Opt. Soc. Am. 55, 1054.Google Scholar
Gericke, W. E. 1961 Z. Astrophys. 53, 68.Google Scholar
Ter Horn, D. Th. J. & Rutgers, G. A. W. 1953 Physica 19, 565.CrossRefGoogle Scholar
Knox, R. S. 1958 Phys. Rev. 110, 375.Google Scholar
Lager'kov, A. N. & Yakubov, I. T. 1963 Optics & Spectroscopy 14, 103.Google Scholar
McChesney, M. & Al-Attar, Z. 1965 J. Quant. spectros. Radiat. Transfer 5, 553.Google Scholar
Oettinger, P. E. 1966 Institute for Plasma Research, Stanford University, Rept. no. 86.Google Scholar
Olsen, N. H. 1963 J. Quant. Spectros. Radiat. Transfer 3, 59.Google Scholar
Pery-Thorne, A. & Chamberlain, J. E. 1963 Proc. Phys. Soc. 82, 133.Google Scholar
Petschek, H. E. & Byron, S. R. 1957 Ann. Phys. 82, 133.Google Scholar
Petschek, H. E. & Rose, P. H., Glick, H. S., Kane, A. & Kantrowitz, A. 1955 J. Appl. Phys. 26, 83.Google Scholar
Pomerantz, J. 1961 J. Quant. Spectros. Radiat. Transfer 1, 185.CrossRefGoogle Scholar
Rutowski, R. W. & Bershader, D. 1964 Phys. Fluids 7, 568.Google Scholar
Schlüter, D. 1965 Astrophys. J. 61, 7.Google Scholar
Sevastyanenko, V. G. & Yakubov, I. T. 1964 Optics & Spectroscipy 16, 1.Google Scholar
Slakter, J. C. 1930 Phys. Rev. 36, 57.Google Scholar
Unsöld, A. 1938 Ann. Physik 33, 607.Google Scholar
Unsöld, A. 1951 Z. Astrophys. 28, 91.Google Scholar
Wong, H. & Bershader, D. 1966 J. Fluid Mech. 26, 459.CrossRefGoogle Scholar
Wong, H. & Horn, K. P. 1965 Proc. 5th International Shock Tube Sysposium, U.S. Naval Ordnanace Laboratory, 103.Google Scholar