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Investigation of energy transfer in plane laser-irradiated targets with high X-ray conversion efficiency

Published online by Cambridge University Press:  09 March 2009

B.N. Bazylev
Affiliation:
Institute of Heat and Mass Exchange, 220072 Minsk, Belarus
G.S. Romanov
Affiliation:
Institute of Heat and Mass Exchange, 220072 Minsk, Belarus
A.S. Smetannikov
Affiliation:
Institute of Heat and Mass Exchange, 220072 Minsk, Belarus
V.I. Tolkach
Affiliation:
Institute of Heat and Mass Exchange, 220072 Minsk, Belarus
I.N. Burdonskii
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
V.V. Gavrilov
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
A.Yu. Gol'tsov
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
E.V. Zhuzhukalo
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
N.G. Koval'Skii
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
V.N. Kondrashov
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
M.I. Pergament
Affiliation:
Troitsk Institute for Innovation and Thermonuclear Investigations, 142092 Troitsk, Moscow, Russia
M.O. Koshevoj
Affiliation:
P.N. Lebedev Physical Institute, 117942 Moscow, Russia
A.A. Rupasov
Affiliation:
P.N. Lebedev Physical Institute, 117942 Moscow, Russia
A.S. Shikanov
Affiliation:
P.N. Lebedev Physical Institute, 117942 Moscow, Russia

Abstract

Results of experimental and computational investigations devoted to energy transfer mechanisms and X-ray conversion efficiency in laser-produced plasma are presented and discussed. The layers of different thicknesses and diameters deposited on the plane mylar substrate were irradiated by the focused beam of Nd:glass laser. Spectrally, temporally, and spatially resolved measurements of soft X-ray emission have been carried out at power densities of 1013-1014 W/cm2. The conditions of “re-emission” zone formation have been established. Radiative heat conductivity is shown to be the important energy transfer mechanism in the experimental conditions under investigation.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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References

REFERENCES

Aleksandrov, Y.M. et al. 1988 Laser Part. Beams 6, 561.CrossRefGoogle Scholar
Bolotin, V.A. et al. 1989 Preprint IEA-4967/7 (Kurchatov Atomic Energy Institute, Moscow).Google Scholar
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