激光直接驱动聚变球靶初始辐照均匀性分析

肖峻; 吕百达; 冯国英; 袁晓东

光学学报, 1998, 18 (12): 1646, 网络出版: 2006-10-18

激光直接驱动聚变球靶初始辐照均匀性分析

Analysis of Initial Irradiation Uniformity on Spherical Target in Direct Drive Laser Fusion

论文大纲

肖峻吕百达冯国英袁晓东

作者单位

四川大学激光物理与化学研究所, 成都 610064

激光直接驱动聚变辐照不均匀度球谐模 direct drive laser fusion irradiation nonuniformity spherical harmonic modes

摘要

采用Skupshy-Lee(S-L)球谐模分解方法,按一个简化的物理模型,对激光直接驱动聚变中不同束-靶条件下的靶面初始辐照不均匀度的均方根偏差进行了数值计算,由此分析了在光束完全对称排布的多光束辐照系统中,光束截面光强分布、聚焦透镜F数、离焦参数(靶心离焦距离与靶丸半径之比)、光束数这几个主要因素对辐照均匀性的影响。

Abstract

The initial irradiation nonuniformity of spherical target is calculated for different laser target conditions, to analyze the influence of different parameters such as the beam intensity profile, lens F number, defocusing parameter and the number of laser beams on irradiation uniformity of spherical target in perfectly symmetric multi beam irradiation system.

参考文献

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[2] S. Skupsky, K. Lee. Uniformity of energy deposition for laser driven fusion. J. Appl. Phys., 1983, 54(7): 3662～3671

[3] A. J. Schmitt. Absolutely uniform illumination of laser fusion pellets. Appl. Phys. Lett., 1984, 44(4): 399～401

[4] W. W. Simmons. Simple analytic solutions for uniform irradiation of spherical targets. Proc. SPIE, 1995, 2633: 249～254

[5] M. Murakaml. Irradiation system based on dodecahedron for inertical confinement fusion. Appl. Phys. Lett., 1995, 66(13): 1587～1589

肖峻, 吕百达, 冯国英, 袁晓东. 激光直接驱动聚变球靶初始辐照均匀性分析[J]. 光学学报, 1998, 18(12): 1646. 肖峻, 吕百达, 冯国英, 袁晓东. Analysis of Initial Irradiation Uniformity on Spherical Target in Direct Drive Laser Fusion[J]. Acta Optica Sinica, 1998, 18(12): 1646.

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