K(4P)原子与H_2分子高转动态间的碰撞转移  

Electronic to high rotational energy transfer between K(4P) and H_2

作　　者：阿布都艾尼.由力瓦斯 普拉提.艾合买提 朱永乐[1] 仲崇玉[1] 沈异凡[1] 戴康[1] 

机构地区：[1]新疆大学物理科学与技术学院,新疆乌鲁木齐830046

出　　处：《激光杂志》2013年第1期21-22,共2页Laser Journal

基　　金：国家自然科学基金(10964011)

摘　　要：研究了K(4P)与H2的电子-高转动态能级间的碰撞转移。利用CARS(相干反斯托克斯拉曼散射)探测H2的高转动态分布,扫描和激活CARS谱证实了在的H2(0.9),(0,10),(0,11)和(1,7)能级上有布居。由扫描和激活CARS谱的峰值得到转动态布居数之比。通过速率方程分析,由时间分辨CARS轮廊得到(0,9),(0,10),(1,7)的自弛豫速率及H2(0,11)→H2(1,7)的碰撞转移速率系数为(2.2±0.6)×10-12cm3s-1。The electronic - to - high rotational energy transfer between K（4P） and H2 molecules has been investigated . we have used CARS （ Coherent Anti - Stokes Ramen Scattering） spectral technique to probe the internal state distribution of collisionally - populated H2 molecules . Both scanned CARS spectra and activated CARS spectra reveal that during E - R energy transfer processes H2 molecules are produced at the （0,9）, （0,10）, and （0,11 ） rotational levels . From scanned and activated CARS spectral peaks population ratios are obtained. Through the timeresolved CARS profiles under a kinetic model the transfer rate coefficient for near resonant H2（0,11）-＊H2（1,7） is determined to be of （2.2±0.6） x 10-12cm3s-l.

关 键 词：电子-高转动能量转移 相干反斯托克斯拉曼散射 布居数分布 速率系数 

分 类 号：O561.4[理学—原子与分子物理]