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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 ,
G.S. Romanov ,
A.S. Smetannikov ,
V.I. Tolkach ,
I.N. Burdonskii ,
V.V. Gavrilov ,
A.Yu. Gol'tsov ,
E.V. Zhuzhukalo ,
N.G. Koval'Skii  and
V.N. Kondrashov
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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
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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
Information
Laser and Particle Beams , Volume 12 , Issue 3 , September 1994 , pp. 355 - 359
Copyright
Copyright © Cambridge University Press 1994

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References

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