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Nonequilibrium laser-produced plasma of volume-structured media and ICF applications

Published online by Cambridge University Press:  02 March 2001

S.Yu. GUS'KOV
Affiliation:
P.N. Lebedev Physical Institute, 117924 Moscow, Russia, Leninsky prospect, 53
A.I. GROMOV
Affiliation:
P.N. Lebedev Physical Institute, 117924 Moscow, Russia, Leninsky prospect, 53
Yu.A. MERKUL'EV
Affiliation:
P.N. Lebedev Physical Institute, 117924 Moscow, Russia, Leninsky prospect, 53
V.B. ROZANOV
Affiliation:
P.N. Lebedev Physical Institute, 117924 Moscow, Russia, Leninsky prospect, 53
V.V. NIKISHIN
Affiliation:
Institute of Mathematical Modeling, Moscow, Russia
V.F. TISHKIN
Affiliation:
Institute of Mathematical Modeling, Moscow, Russia
N.V. ZMITRENKO
Affiliation:
Institute of Mathematical Modeling, Moscow, Russia
V.V. GAVRILOV
Affiliation:
Troitsk Institute of Innovation Thermonuclear Investigations, Troitsk, Russia
A.A. GOL'TSOV
Affiliation:
Troitsk Institute of Innovation Thermonuclear Investigations, Troitsk, Russia
V.N. KONDRASHOV
Affiliation:
Troitsk Institute of Innovation Thermonuclear Investigations, Troitsk, Russia
N.V. KOVALSKY
Affiliation:
Troitsk Institute of Innovation Thermonuclear Investigations, Troitsk, Russia
M.I. PERGAMENT
Affiliation:
Troitsk Institute of Innovation Thermonuclear Investigations, Troitsk, Russia
S.G. GARANIN
Affiliation:
Russian Federal Nuclear Center, All-Russian Scientific Research Institute of Experimental Physics, Sarov, Russia
G.A. KIRILLOV
Affiliation:
Russian Federal Nuclear Center, All-Russian Scientific Research Institute of Experimental Physics, Sarov, Russia
S.A. SUKHAREV
Affiliation:
Russian Federal Nuclear Center, All-Russian Scientific Research Institute of Experimental Physics, Sarov, Russia
A. CARUSO
Affiliation:
ICF Physics and Technology Laboratory, CR ENEA, Frascati, Italy
C. STRANGIO
Affiliation:
ICF Physics and Technology Laboratory, CR ENEA, Frascati, Italy

Abstract

This paper is devoted to the investigation of powerful laser pulse interaction with regularly and statistically volume-structured media with near critical average density and properties of laser-produced plasma of such a media. The results of the latest experiments on laser pulse interaction with plane foam targets performed on Nd-laser facilities “ABC” in the ENEA-EURATOM Association (Frascati, Italy) and “MISHEN” in the Troitsk Institute of Innovation Thermonuclear Investigations (TRINITI, Troitsk Russia), and J-laser “ISKRA-4” in the Russian Federal Nuclear Center, All-Russian Scientific Research Institute of Experimental Physics (RFNC-VNIIEF, Sarov, Russia) are presented and analyzed. High efficiency of the internal volume absorption of laser radiation in the foams of supercritical density was observed, and the dynamics of absorbing region formation and velocity of energy transfer process versus the parameters of porous matter are found. Some inertial confinement fusion (ICF) applications based on nonequilibrium properties of laser-produced plasma of a foam and regularly structured media such as the powerful neutron source with yield of 109–1011 DT-neutrons per 1 J of laser energy, laser-produced X-ray generation in high temperature supercritical plasma, and the compact ICF target absorbers providing effective smoothing and ablation are proposed.

Type
ECLIM '98 PAPERS
Copyright
© 2000 Cambridge University Press

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