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X-Ray Spectra from Highly Ionized Iron and Nickel*

Published online by Cambridge University Press:  12 April 2016

J. L. Schwob  and
B. S. Fraenkel
J. L. Schwob
Affiliation:
Laboratory of X-Rays and Far UV Spectroscopy, The Racah Institute of Physics, The Hebrew University, Jerusalem, Israel
B. S. Fraenkel
Affiliation:
Laboratory of X-Rays and Far UV Spectroscopy, The Racah Institute of Physics, The Hebrew University, Jerusalem, Israel

Extract

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X-ray radiation is obtained from a point plasma produced by pinch effect Cohen et al. (1968) in a vacuum spark similar to that used by Lie and Elton (1971) with a 220 kA peak current. The extremely dense and hot minute plasma appears at a distance of 0.5 to 1 mm from the anode tip and has maximum dimensions of a few microns.

The spectroscopic observations are performed by means of a focusing Cauchois spectrometer so as to avoid effects of fluctuations in the source position.

Type
Section II / Excitation and Ionization: Theory and Experiments
Information
International Astronomical Union Colloquium , Volume 14: Special Issue: Ultraviolet and X-Ray Spectroscopy of Astrophysical and Laboratory Plasmas , November 1972 , pp. 589 - 591
Copyright
Copyright © Reidel 1972

Footnotes

**

On leave of absence from the Laboratoire des Hautes Pressions, CNRS – 92 Bellevue (France).

*

Initial experiments were made at NASA Ames Research Center by BSF, on an NSF research fellowship during 1968–1970. The work presented here was facilitated in part by the Ford Foundation.

References

Cohen, L., Feldman, U., Swartz, M., and Underwood, J. H.: 1968, J. Opt. Soc. Am. 58, 843.Google Scholar
Lie, T. N. and Elton, R. C.: 1971, Phys. Rev. A3, 865.Google Scholar
Neupert, W. M. and Swartz, M.: 1970, Astrophys. J. 160, L189.Google Scholar
House, L. L.: 1969, Astrophys. J. Suppl. 18, 21.Google Scholar