摘要
用高能量钕玻璃激光器(0～25J)烧蚀Al靶产生等离子体.实验中测量了Ar气气压在0.1～1.0MPa范围内,等离子体发射光谱的谱线强度、半宽度、信背比以及等离子体的电子温度和电子密度随气压的变化.结果表明,随着环境气体压强的升高,等离子体的空间体积被压缩,电子温度和电子密度增大,辐射强度有明显的增强.
Aluminum plasma was induced with a high energy neodymium glass laser（0-25J） beam ablating Al target. Both the line intensity,half width,signal-to-background ratio of the emission spectra and the electron temperature,electron density of the plasma was mearsured in Ar atmosphere at 0.1-1.0MPa pressure. The experimental results show that the volume of the plasma is compressed, the electron temperature and density increased, the radiation intensity enhanced significantly when pressure raise.
出处
《应用激光》
CSCD
北大核心
2005年第6期401-404,共4页
Applied Laser
基金
河北省科技厅攻关项目(02820180D)资助
关键词
激光诱导等离子体
高气压
谱线强度
电子温度
电子密度
Laser-induced plasma
High pressure
Line intensity
Electron temperature
Electron density
