Electrostatic probe and optical spectroscopy studies of low temperature laser produced plasmas

被引：3

作者：

Hendron, JM

AlWazzan, RA

Mahony, C

Morrow, T

Graham, WG

机构：

[1] Dept. of Pure and Applied Physics, Queen's University of Belfast

来源：

APPLIED SURFACE SCIENCE | 1996年 / 96-8卷

关键词：

D O I：

10.1016/0169-4332(95)00417-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrostatic probe and optical spectroscopy techniques were used to investigate ion number densities, ion velocities and ion/neutral ratios of laser-produced YBCO plasmas in vacuum and in ambient oxygen. Under appropriate experimental conditions both techniques have been observed to yield consistent values for local ion number densities and velocities in a vacuum environment. Due to confinement of the plume in oxygen ion/neutral ratios were observed to decrease from similar to 10 in vacuum to similar to 5 in 60 mTorr of oxygen, at 1.5 cm from the target and 1 mu s delay time.

引用

页码：112 / 116

页数：5

共 8 条

[1] Spatially and temporally resolved emission intensities and number densities in low temperature laser-induced plasmas in vacuum and in ambient gases [J].