Effects of substrate-ion density gradients on light-ion acceleration from ultraintense laser pulse irradiated thin-foils

被引：2

作者：

Liu Ming-Wei ^{[1
]}

Li Ru-Xin ^{[1
]}

Xia Chang-Quan ^{[1
]}

Liu Jian-Sheng ^{[1
]}

Xu Zhi-Zhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

CHINESE PHYSICS B | 2010年 / 19卷 / 07期

基金：

中国国家自然科学基金;

关键词：

laser-plasma interaction; ion acceleration; substrate-ion density gradient; PROTON-BEAMS;

D O I：

10.1088/1674-1056/19/7/075203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A general solution of the electrostatic potential that determines the maximum light-ion energy is derived for the test-particle acceleration model by taking into account the influence of the substrate-ion density gradient. It is shown that the substrate-ion density structure is also dependent on laser pulse duration. In the picosecond or sub-picosecond regime, the decreasing density gradient of the substrate-ions leads to an evident reduction in the acceleration efficiency of the light-ions. However, this kind of influence is negligible in the ultrashort regime.

引用

页数：8

共 26 条

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