Experimental and numerical study of the ionization dynamics of a nanosecond laser-produced aluminum plasma with picosecond resolution

被引：6

作者：

Fajardo, M ^{[1
]}

Audebert, P

Yashiro, H

Gauthier, JC

Chenais-Popovics, C

Renaudin, P

Peyrusse, O

Fortin, X

Shepherd, R

机构：

[1] Univ Paris 06, Ecole Polytech, CEA, CNRS,UMR 7605,Lab Utilisat Lasers Intenses, F-91128 Palaiseau, France

[2] CEA, F-91680 Bruyeres Le Chatel, France

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[4] Inst Super Tecn, Grp Lasers & Plasmas, Lisbon, Portugal

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2001年 / 71卷 / 2-6期

关键词：

laser produced plasma; NLTE kinetics; radiation-hydrodynamic simulation; X-ray spectroscopy;

D O I：

10.1016/S0022-4073(01)00078-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An experimental and numerical analysis of the ionization dynamics of a freely expanding nanosecond laser-produced plasma is given. Point-projection X-ray absorption spectroscopy with picosecond time-resolution is used to provide a spatio-temporal mapping of the ion distribution. The average ionization state, calculated as a function of time and distance to the target, is used to benchmark hydrodynamics and atomic physics codes. A comparison with several codes has been performed, showing that a full description of radiation transport, 2-D effects and detailed, time-dependent, atomic physics is necessary in order to explain the experimental results. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：317 / 329

页数：13

共 32 条

[1] Non-LTE ionization and energy balance in high-Z laser plasmas including two-electron transitions [J].