K_2分子2~3∏_g—1~3∑_u^+漫射谱强度的碰撞诱导增强效应

COLLISION-INDUCED ENHANCEMENT EFFECT OF THE INTENSITIES OF 2~3∏_g——1~3∑_u^+ DIFFUSE SPECTRUM FOR K_2 DIMER

用4415.6ACW激光线获得了5730A附近的K_2分子2~3∏_g—1~3∑_u^+漫射荧光谱。实验研究了缓冲气体Ar气压强P对漫射谱峰值强度I_(diff)的碰撞诱导增强效应。用稳态碰撞模型描述了C^1∏_u—2~3∏_g间的能量转移过程,推导出了I_(diff)-P函数关系,对实验数据进行了令人满意的拟合。这种拟合表明:适当变更实验装置,利用本文模型可以得到C^1∏_u—2~3∏_g间的能级交叉速率和碰撞诱导转移速率。

The 2~3Π_g-1~3∑_u^+ diffuse fluorescence spectrum around 5730 A for K2 dimer excited by 4415.6 A CW Isser line was obtained. The collision-induced enhancement effect of the maximum intensities I_(diff) of the diffuse spectrum versus the pressure P ot buffer gas Ar was studied experimentally. The energy transfer processes of C^1Π_u-2~3Π_g was showed by stable collision model. The I_(diff)-P relation was deduced and a satisfactory fitting for the experimental data was obtained by use of this model. This fitting showed that the energy crossing rate and collision-induced transfer rate could be obtained by this model with some alternations of the experimental setup.