高振动激发态CsH(v)与CO_2碰撞弛豫过程的实验研究

Experimental Investigation of Collisional Relaxation Processes in Highly Vibrationally Excited CsH(v)-CO_2

在Cs-H2系统和CO_2的混合系统中,采用简并受激超拉曼(DSHR)泵浦技术,研究了CsH分子的高位振动激发态与CO_2的碰撞弛豫过程,测量了CsH(v=15-23)与CO_2之间的各振动弛豫系数,实验表明v=22时,碰撞弛豫速率系数达到最大值.

The collisional relaxation processes between the highly vibrationally excited Cs H（v=15-23） and CO2 have been studied by using a degenerate stimulated hypor raman pumping technique. With Cs-H2 and CO2mixture, the vibrational levels of Cs H（v=0） were generated in the reaction of Cs（7P） and（H2）. Rate constants kv（Cs H-CO2） for collisional relaxations were measured accurately when Cs H level v=15 increases to v=23. For v=22, the rate coefficients is maximum.