SCALING LAWS FOR PLASMA PRODUCTION AND PELLET ACCELERATION BY LASER

被引:2
作者
MCGEOCH, MW
机构
[1] Science Research Council, Rutherford Laboratory, Chilton, Didcot, Oxon
关键词
D O I
10.1088/0029-5515/19/5/006
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The results from a spherical-symmetry hydrodynamic calculation are adapted to describe the production of large plasmas by the laser ablation of solid-density pellets. Expressions are given for the rate of ablation, plasma temperature and ion energy. The upper limit on the ionized particle number is set by pellet disintegration following heating by laser-driven shock. Scaling laws are derived for the total plasma energy and particle number. Plasma conductivity transforms one-sided illumination into an approximately spherical ablation, allowing a discussion of the scaling laws for laser-induced acceleration. The reduction in laser acceleration due to quasi-spherical ablation has negative implications for laser acceleration as a method of reactor re-fuelling. © 1979 IOP Publishing Ltd.
引用
收藏
页码:633 / 640
页数:8
相关论文
共 24 条
[1]   PLASMA PRODUCTION BY IRRADIATING FREELY FALLING DEUTERIUM PELLETS WITH A HIGH-POWER LASER [J].
BAUMHACKER, H ;
BRINKSCHULTE, H ;
LANG, RS ;
RIEDMULLER, W ;
SALVAT, M .
APPLIED PHYSICS LETTERS, 1977, 30 (09) :461-463
[2]  
BURGESS MDJ, 1978, THESIS OXFORD U
[3]   LASER ACCELERATION OF REACTOR-FUEL PELLETS [J].
FELBER, FS .
NUCLEAR FUSION, 1978, 18 (10) :1469-1471
[4]   STRUCTURE AND SCALING LAWS OF LASER-DRIVEN ABLATIVE IMPLOSIONS [J].
GITOMER, SJ ;
MORSE, RL ;
NEWBERGER, BS .
PHYSICS OF FLUIDS, 1977, 20 (02) :234-238
[5]   OBSERVATION OF SEVERE HEAT-FLUX LIMITATION AND ION-ACOUSTIC TURBULENCE IN A LASER-HEATED PLASMA [J].
GRAY, DR ;
KILKENNY, JD ;
WHITE, MS ;
BLYTH, P ;
HULL, D .
PHYSICAL REVIEW LETTERS, 1977, 39 (20) :1270-1273
[6]   DISINTEGRATION AND VAPORIZATION OF PLASTIC TARGETS IRRADIATED BY HIGH-POWER LASER-PULSES [J].
GREIG, JR ;
PECHACEK, RE .
JOURNAL OF APPLIED PHYSICS, 1977, 48 (02) :596-604
[7]   PRODUCTION OF LARGE WARM PLASMAS BY STAGED LASER-HEATING OF SOLID TARGETS [J].
GREIG, JR ;
PECHACEK, RE .
APPLIED PHYSICS LETTERS, 1976, 29 (12) :798-800
[8]  
KERLEY GI, 1972, LA4776 LASL REP
[9]  
KRISTAL R, 1978, B AM PHYS SOC, V23, P894
[10]   EFFECT OF WAVELENGTH ON ABSORPTION AND IONIZATION OF LASER-PRODUCED PLASMAS IN MAGNETIC-FIELDS WITH ALLOWANCE FOR FINITE-RATE IONIZATION AND RECOMBINATION [J].
LENGYEL, LL .
PLASMA PHYSICS AND CONTROLLED FUSION, 1976, 18 (12) :929-945