X-ray line polarization spectroscopy to study hot electron transport in ultra-short laser produced plasma

被引：18

作者：

Inubushi, Y

Nishimura, H

Ochiai, M

Fujioka, S

Johzaki, T

Mima, K

Kawamura, T

Nakazaki, S

Kai, T

Sakabe, S

Izawa, Y

机构：

[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[2] Tokyo Inst Technol, Midori Ku, Kanagawa 2268502, Japan

[3] Miyazaki Univ, Fac Engn, Dept Appl Phys, Miyazaki 8892192, Japan

[4] Kyoto Univ, Chem Res Inst, Kyoto 6110011, Japan

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2006年 / 99卷 / 1-3期

关键词：

ultra-high intense laser; X-ray line polarization spectroscopy; hot electrons; velocity distribution function;

D O I：

10.1016/j.jqsrt.2005.05.024

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Observation is reported of the polarization of the helium-like Cl-He alpha line (1s(2) S-1(0)- 1s2p P-1(1)), at 2.79 keV emitted from a triple-layer target irradiated with a 130 fs laser pulse. The polarization degree is determined as a function of overcoat thickness of the target. It is found that the emission from a layer closer to the target surface is polarized parallel to the surface direction whereas emission from a deeper region in perpendicular to the surface. The experimental result is analyzed using a two-dimensional (2D) Maxwellian distribution function for hot electrons. Beam-like distribution was found in the depth of plasma. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：305 / 313

页数：9

共 25 条

[1] Explanations for the observed increase in fast electron penetration in laser shock compressed materials [J].