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亚稳态分子猝灭机理的研究一直受到人们的极大重视.本文利用E-V传能模型对亚稳态分子PCl(b~1∑~+)的猝灭过程进行了定量处理.结果表明PCl(b~1∑~+)的猝灭是PCl(b~1∑~+→a~1△)跃迁和试剂分子端键X—Y振动能级近共振传能的结果,与PCl(b~1∑~+)的猝灭是PCl(b~1∑~+→a~1△)跃迁的Franck-Condon因子及试剂分子端键X—Y振动的非谐性系数有关,而且也受猝灭试剂分子极化率的影响.
The mechanism of quasi-steady-state molecular quenching has been paid much attention by people.This paper quantified the quenching process of metastable molecule PCl (b ~ 1Σ ~ +) using EV energy transfer model.The results show that PCl ( The quenching of b ~ 1Σ ~ + is the result of near resonant resonance energy transition of PCl (b ~ 1Σ ~ + → a ~ 1 △) and X-Y vibrational energy at the end of the reagent molecule, The quenching of Σ ~ + is related to the Franck-Condon factor of PCl (b ~ 1Σ ~ + → a ~ 1 △) transition and the anharmonicity coefficient of X-Y vibration at the end of reagent molecule, Effect of molecular polarizability.