摘要
本文从高分辩Raman UV光学共振光谱,首次定出了C_2H_2(~1∑_a^+,v_2″=1)Q(3)和Q(5)的值,它们分别为(1974.252±0.019)cm^(-1)和(1974.127±0.008)cm^(-1).在C_2H_2—C_2H_2低碰撞数Z的实验条件下,从~1A_u(v_3~1=1←~1∑_a^+(v_2″=1)的荧光谱,直接测量了C_2H_2(~1∑a^+,v_2″=1、J″=3、5、9、11、13)的消激活速率常数和由这几个初始转动态向其它不同转动态(v_2′=1,J=1、3、5……15)多量子跃迁转移的激活速率常数.利用速率常数矩阵模型,对实验数据进行了计算机模拟,其理论模型与实验结果符合情况较好.
Using high resolution Raman UV optical resonance spectra of C_2H_2((?)~1∑_R^+,v″_2=1), the rotation-vibration Raman shifts in the Q(3) and Q(5) branchs of the v″_2 band have been achieved for the first time. They are (1974.252±0.019)cm^(-1) for Q(3), (1974.127±0.008)cm^(-1) for Q(5). Under C_2H_2/C_2H_2 lower collision number Z experimental condition, the R-R deactivation rate constants for (v″_2=1, J″=3、5、9、11、13) and the multiquanta R-R energy transfer activation rate constants from the initial pumped levels to other different rotational states (v″_2=1, J″=1、3、5……15) have been extracted. The computer simulation of the experimental data has been achieved by rate constant matrix model and the simulation is in good accord with the experimental result.
