产生钾分子扩散带辐射的碰撞传能研究

ACCOMPANY COLLISIONAL ENERGY TRANSFER IN GENERATING DIFFUSE BAND OF K_2

用三能级瞬态速率方程，建立了钾分子１ΛＡｇ和２３∏ｇ态的碰撞能量转移的模型，实验上测量了不同温度的２３∏ｇ→α３∑辐射跃迁的荧光寿命，由此给出了１Λｇ和２３∏ｇ态的碰撞截面，理论与实验结果进行了比较。

By use of three-energy-level rate equation, we establish a model of collisional energy transfer between the high states 1Λg and 23∏g. The collisional energy transfer process and the relationship betwee the fluorescence effect lifetime and sapmle temperatures were analyzed in theory. In our experiment, the fluorescence lifetime from the transition of 23∏g→α3∑at different temperatures was measured, by which we obtained the collisional coross section of 1Λg and 23∏g.