Fast ignition when heating the central part of an inertial confinement fusion target by an ion beam

被引：8

作者：

Gus'kov, S. Yu ^{[1
,2
]}

Zmitrenko, N. V. ^{[3
]}

Il'in, D. V. ^{[4
]}

Sherman, V. E. ^{[4
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[2] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[3] Russian Acad Sci, MV Keldysh Appl Math Inst, Moscow 125047, Russia

[4] St Petersburg State Tech Univ, St Petersburg 195251, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2014年 / 119卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

HIGH-GAIN; PLASMA; ICF; PARAMETERS; FUEL;

D O I：

10.1134/S1063776114110077

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the ignition and burning of a precompressed laser fusion target when it is rapidly heated by an ion beam with the formation of a temperature peak in the central part of the target. We present the results of our comprehensive numerical simulations of the problem that include the following components: (1) the target compression under the action of a profiled laser pulse, (2) the heating of the compressed target with spatially nonuniform density and temperature distributions by a beam of high-energy ions, and (3) the burning of the target with the initial spatial density distribution formed at the instant of maximum target compression and the initial spatial temperature distribution formed as a result of the compressed-target heating by an ion beam. The dependences of the threshold energies of the igniting ion beam and the thermonuclear gain on the width of the Gaussian beam ion energy spectrum have been established. The peculiarities of fast ignition by an ion beam related to the spatial distribution of parameters for the target precompressed by a laser pulse are discussed.

引用

页码：958 / 970

页数：13

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