亚稳态CO(a~3П)分子是一种重要的能量载体,其能量转移反应一直受到人们的极大重视.在流动体系中对CO(a~3П)+NO(X~2П_i)反应的研究已有不少报道.但在气束条件下直接观察CO(a~3П)与NO(X~2П_i)之间能量转移的报道甚少.于化忠等人利用Ar+CO_2混合放电产生了CO(a~3П),并在气束条件下研究了CO(a~3П)+NO(X~2П_i)的反应.最近,我们在产生CO(a~3П)的方法上做了改进,制备了两种有不同振动态分布的CO(a~3П)束源,在气束条件下研究了CO(a~3П)的振动态分布对CO(a~3П)+NO(X~2П_i)反应的影响,并应用能隙规律对实验结果进行了理论分析. The metastable CO (a ~ 3П) molecule is an important energy carrier, and its energy transfer reaction has been given great attention by people.In the flowing system, the reaction of CO (a ~ 3П) + NO (X ~ 2П_i) However, there are few reports about the energy transfer between CO (a ~ 3П) and NO (X ~ 2П_i) directly under the condition of gas beam.In Yuzhong et al., The mixed discharge of Ar + CO_2 CO (a ~ 3П), and the reaction of CO (a ~ 3П) + NO (X ~ 2П_i) was studied under the condition of gas beam.We have recently made some improvements on the method of producing CO (a ~ 3П) Two kinds of CO (a ~ 3П) beam sources with different vibrational distributions were used to study the CO (a ~ 3П) + NO (X ~ 2П_i) responses of CO (a ~ 3П) The effect of energy gap was also analyzed theoretically on the experimental results.