He(2~3S)与N_2O((?))Penning电离中的N_2O^+(~2∑^+)生成速率及相对振动布居  

The Rate Constant and Relative Vibrational Distributions o fN_2O+(A^(～2)Σ^+)Produced by He(2~3S) Collision with N_2O

作　　者：沈关林[1] 李学初[1] 陈宏[1] 徐大东[1] 王黎明[1] 楼南泉[1] 

机构地区：[1]中国科学院大连化学物理研究所,分子反应动力学国家重点实验室,大连116023

出　　处：《Chinese Journal of Chemical Physics》1993年第6期503-509,共7页化学物理学报（英文）

基　　金：国家自然科学基金

摘　　要：在分子束条件下测量了He(2~3S)+N_2O(?)→N_2O^+((?)^(-2)Σ^+)+He(~1S_0)+e^-反应的Penning电离光学光谱,求得了N_2O^+((?)^(-2)Σ^+)态的初生态相对振动布居。以He(2~3S)+N_2(X)→N_2^+(B^2Σ_(?)^+)+He(~1S_0)+e^-为参考反应,测量了He(2~3S)+N_2O(?)→N_2O^+(A^(-2)Σ^+)+He(~1S_0)+e^-反应的速率常数k_N_2O^+=(8.1±1.5)×10^(-11)厘米~3·分子^(-1)·秒^(-1)。并对实验结果作了简单的讨论。The emission spectrum of Penning ionization has been measured for the collision of He(2~3S) with N_2O(?) at molecular beam condition. The nascent relative vibrational distributions of the N_2O^+((?)Σ^+) have been obtained by using the emission spectrum intensity and fluorescence quantum yields. The rate constant of the title reaction was calculated, as (8.1±1.5)×10^(-11)cm^3·melee^(-1)·s^(-1), by comparing the one of the reference reaction He(2~3S)+N_2(?)→N_2^+(B^2∑^+)+He(~1S_o)+e^-. And the experimental results were discussed in brief.

关 键 词：亚稳态 氦 一氧化二氮 潘宁电离 

分 类 号：O613.11[理学—无机化学]