Emission analysis of expanding laser produced lithium plasma plume in presence of ambient gas

被引：13

作者：

Joshi, H. C. ^{[1
]}

Prahlad, V. ^{[1
]}

Singh, R. K. ^{[1
]}

Kumar, Ajai ^{[1
]}

机构：

[1] Inst Plasma Res, Bhat 382428, Gandhinagar, India

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 37期

关键词：

Laser-blow-off; Li plasma plume; Atomic process; BLOW-OFF; ABLATION; DYNAMICS; PRESSURE; LINE; FILM;

D O I：

10.1016/j.physleta.2009.07.039

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Atomic analysis of the emission from laser-produced plasma from bulk lithium (Li) block has been made. The observed changes in the emission from lithium neutral and ionic species have been explained by considering various atomic processes. We demonstrate that the excitation process in case of neutral lithium Li (I) is electron impact excitation whereas for singly ionized lithium Li (II), radiative recombination is the dominant mechanism. We also show that the ionized species are dominant in the LPP plume. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3350 / 3353

页数：4

共 39 条

[1] Simulation of nanosecond pulsed laser ablation of copper samples: A focus on laser induced plasma radiation [J].