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X-ray laser gain in a plasma channel

Published online by Cambridge University Press:  01 November 1999

J. PARASHAR
J. PARASHAR
Affiliation:
Department of Physics, Samrat Ashok Technological Institute, Vidisha (M.P.) 464 001, India
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Abstract

A preformed plasma channel of light ion species, with a small percentage of high-Z atoms, can be produced by a laser prepulse. When an intense short laser pulse propagates through the channel, high-Z atoms are stripped of most of their electrons. After the passage of the pulse, recombination of electrons with high-Z ions produces population inversion for the generation of coherent X rays. However, the gain is strongly dependent on the radial coordinate r. A paraxial-ray theory of X-ray amplification in such a situation reveals that gain focusing and refraction guiding play an important role in determining the gain and the spot size of the X-ray laser.

Type
Research Article
Information
Journal of Plasma Physics , Volume 62 , Issue 5 , November 1999 , pp. 477 - 483
Copyright
1999 Cambridge University Press

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