用放电 -LIF实验装置 ,对 CCl4 / Ar混合气体放电产生· CCl2 ,再用 541 .52 nm激光将电子基态·CCl2 激发到激发态 A1B1( 0 ,4 ,0 )模 p R1能级上 ,检测激发态· CCl2 时间分辨荧光信号 ,测得室温下· CCl2( A1B1)被甲烷及氯代甲烷分子猝灭的实验结果 ,用三能级模型分析处理实验数据获得态分辨速率常数 kq1,kq2 和 kq3 值和· CCl2 ( A1B1→ X1A1)及 ( a3 B1→ X1A1)自发辐射寿命分别为 ( 0 .83± 0 .0 3 )μs和 ( 3 .1 2± 0 .2 5)μs Using discharge-LIF experimental device, CCl4 / Ar mixed gas was discharged to produce CCl2, and then 541.52 nm laser was used to excite the electron ground state CCl2 to the excited state A1B1 (0, 4, 0) Excited state · CCl2 time-resolved fluorescence signal, measured at room temperature CCl2 (A1B1) was methane and methyl chloride molecules quenching experimental results using three-level model analysis and experimental data obtained state resolution rate constants kq1, kq2 and kq3 The lifetime of spontaneous emission for the values ​​CCl 2 (A1B1 → X1A1) and (a3 B1 → X1A1) were (0.83 ± 0.30) μs and (3.12 ± 0.25) μs