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用193毫微米光解BrCN和ClCN的研究,发现一些很有意义的结果。如在光解BrCN时发现碎片CN X~2∑~+ v″=0的转动能级高达80以上,它可研究高转动能在传能和反应中的作用。研究中发现一些异常现象;Heaven等在扩散分子束中得到BrCN的光解产物CN X~2∑~+,共中v″=0约占80%,v″=1约占20%;而Halpern等在10~(-5)Torr延迟0.2微秒测得的光解产物,v″=0占94%,v″=1占6%。Heaven给出的谱图上出现很高的P_(0,0)支带头,与Halpern结果比较,明显地发生了转动弛豫,达表明实验中有碰撞弛豫。但为什么v″=1的布居不下降,却反而上升?为了弄清达个问题,我们在不同BrCN压办及不同延迟时间下去探测CN X~2∑~+,v″的碰撞弛豫。
The 193 nm photolysis of BrCN and ClCN studies have yielded some interesting results. For example, when the photolysis of BrCN was found, the rotational energy of the fragment CN X ~ 2Σ ~ + v “= 0 was as high as above 80. It could be used to study the effect of high rotational energy on the energy transfer and reaction. Some anomalies were observed in the study. In the diffused molecular beam, the photolysis product CN X ~ 2Σ ~ + of BrCN is obtained, and the total amount of v = 0 is about 80% and v ”= 1 is about 20%. Halpern et al. Torr measured photolysis products delayed 0.2 microseconds with v “= 0 accounting for 94% and v” = 1 accounting for 6% .Heaven showed a very high P_ (0,0) The results show that rotational relaxation obviously occurred, which indicates that there is collision relaxation in the experiment, but why did the population of v = 1 stay on the rise but rise? In order to find out some problems, Collision relaxation of CN X ~ 2Σ ~ +, v "is probed with different delay time.