摘要
本文用光学光谱分析仪（ＯＳＡ，ＷＰ－４）首次测量了ＸｅＣｌ准分子激光在ＹＢａ２Ｃｕ３Ｏ７－ｘ超导靶面激励等离子体发射谱的轴向、径向分布。综合空间分辩率＜３００μｍ。结果表明在入射激光功率密度为２．２４×１０８Ｗ／ｃｍ２，背景氧压为２×１０－１Ｔｏｒｒ时，等离子体激发态粒子具有ＣＯＳ（ｎ）θ的空间角分布。其中，ｎ的值为２．９到４．８之间。
Using an Optical Spectrescopic Analyzer (OSA, WP-4), the axial and radial distributions of emission spectra intensities of Xecl excimer laser induced plasma near YBa2Cu3O7-xtarget were determined. The spatial resolution of the measurement was less than 300μm. The resukts show that the angle distributions of the excited species in the plasma plume follow cos(n)θ when the laser power density is 2.24×108w/cm2and the background oxygen pressure is 2×10-1Torr, where the value of n is between 2.9-4.8 .
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
1994年第4期228-232,共5页
Journal of Optoelectronics·Laser
