Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-17T19:04:54.206Z Has data issue: false hasContentIssue false
  • English
  • Français

Dielectronic Satellite Spectra in the Soft X-Ray Region

Published online by Cambridge University Press:  12 April 2016

A.H. Gabriel
A.H. Gabriel*
Affiliation:
Astrophysics Research Unit, Culham Laboratory, Abingdon, Berks., England

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Satellite lines, situated on the long wavelength side of the helium-like ion resonance line, can be observed in highly-ionized ions both in laboratory sources and from the Sun. Although seen for more than 30 years, these lines have only recently been classified in detail as inner-shell transitions in lithium-like ions. Laboratory experiments have shown that under steady-state conditions these satellites are produced by dielectronic recombination, although in transient ionizing plasmas direct inner-shell excitation can be important. Detailed calculations have been carried out for high Z ions up to copper, and the results can be compared with solar flare spectra in iron. Such comparisons allow both the electron temperature and the transient state of the plasma to be determined. Laboratory spectra from such high-Z ions are different in appearance, and may be dominated by processes resulting from the transient ionizing state of the plasma.

Type
Section IV / The Solar Soft X-Ray Spectrum
Information
International Astronomical Union Colloquium , Volume 14: Special Issue: Ultraviolet and X-Ray Spectroscopy of Astrophysical and Laboratory Plasmas , November 1972 , pp. 655 - 664
Copyright
Copyright © Reidel 1972

References

Burgess, A.: 1965, Astrophys. J. 141, 1588.CrossRefGoogle Scholar
Doschek, G. A.: 1972, this issue, p. 765.Google Scholar
Edlén, B. and Tyrén, F.: 1939, Nature 143, 940.Google Scholar
Elton, R. C. and Lie, T. N.: 1972, this issue, p. 747.Google Scholar
Feldman, U. and Cohen, L.: 1969, Astrophys. J. 158, L169.CrossRefGoogle Scholar
Freeman, F. F., Gabriel, A. H., Jones, B. B., and Jordan, C.: 1971, Phil. Trans. Roy. Soc. London A270, 127.Google Scholar
Fritz, G., Kreplin, R. W., Meekins, J. F., Unzicker, A. E., and Friedman, H.: 1967, Astrophys. J. 148, L133.Google Scholar
Froese, C.: 1969, Comput. Phys. Commun. 1, 151.Google Scholar
Gabriel, A. H.: 1972, Monthly Notices Roy. Astron. Soc. to be published.Google Scholar
Gabriel, A. H. and Jordan, C.: 1969a, Nature 221, 947.CrossRefGoogle Scholar
Gabriel, A. H. and Jordan, C.: 1969b, Monthly Notices Roy. Astron. Soc. 145, 241.CrossRefGoogle Scholar
Gabriel, A. H.: and Paget, T. M.: 1972, J. Phys. B. 5, 673.Google Scholar
Gabriel, A. H., Jordan, C., and Paget, T. M.: 1969, in Proc. 6th Int. Conf. on Physics of Electronic and Atomic Collisions, M.I.T. Press, Massachusetts, p. 558.Google Scholar
Goldsmith, S.: 1969, J. Phys. B. 2, 1072.Google Scholar
Grineva, Yu. I., Karev, V. I., Korneev, V. V., Krutov, V. V., Mandelstam, S. L., Vainstein, L. A., Vasiljev, B. N., and Zitnik, I. A.: 1971, paper presented at COSPAR, Seattle; to be published in Kosmich. Issled., U.S.S.R. Google Scholar
Jones, B. B., Freeman, F. F., and Wilson, R.: 1968, Nature 219, 252.Google Scholar
Neupert, W. M., Gates, W., Swartz, M., and Young, R.: 1967, Astrophys. J. 149. L79.CrossRefGoogle Scholar
Propin, R. Kh.: 1961, Opt. Spectr. 10, 155.Google Scholar
Roth, N. V. and Elton, R. C.: 1968, NRL Rep. 6638.Google Scholar
Rugge, H. R. and Walker, A. B. C.: 1968, Space Res. 8, North-Holland Publ. Co., Amsterdam, p. 439.Google Scholar
Schwob, J. L. and Fraenkel, B. S.: 1972, this issue, p. 589.Google Scholar
Vainstein, L. A. and Safronova, U. I.: 1971a, Soviet Astron. AJ 15, 175.Google Scholar
Vainstein, L. A. and Safronova, U. I.: 1971b, private communication, to be published in Short Communications in Physics (Lebedev Institute).Google Scholar
Walker, A. B. C.: 1972, this issue, p. 672.Google Scholar
Walker, A. B. C. and Rugge, H. R.: 1971, Astrophys. J. 164, 181.Google Scholar
Wu, T. Y.: 1940, Phys. Rev. 58, 1114.Google Scholar
Wu, T. Y. and Shen, S. T.: 1944, Chinese J. Phys. 5, 150.Google Scholar