Investigation of collisional quenching of CCl_2 (A~1B_1) in different vibrational states

Yide Gao; Yang Chen; Qin Ran; Xingxiao Ma; Congxiang Chen

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Investigation of collisional quenching of CCl_2 (A~1B_1) in different vibrational states

机译：不同振动状态下CCl_2（A〜1B_1）的碰撞猝灭研究

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CCl_2 free radicals were produced by a pulsed dc discharge of CCl_4(in Ar).Ground eletronic state CCl_2(X) radicals were elestronically excited to A~1B_1(0,3,0),(0,4,0),(1,3,0),(0,6,0)(1,4,0),and(2,2,0)vibronic states by a Nd:YAG laser pumped dye laser at 550.56,541.52,532.25,524.31,523.82,and 523.37nm,respectively.Experimental quenchingdata of excited CCl_2(A~1B_1 and a~3B_1) by CH_3OH,C_2H_5OH,n-C_3H_7OH,n-C_4H_9OH,CH_2Br_2,CH_3COCH_3,CH_3COC_2H_5,NH(CH_3)_2,NH(C_2H_5)_3and n-C_6H_(14)molecules were obtainedby observing the time-resolved totallaser induced fluorescence(LIF)signal of the excited CCl_2 radical,which showed a superposition of two exponential components under the presence of quenched.The quenching rate constants of the A(~1B_1)states of CCl_2,k_A and k_a,were derived by analyzing the experimental data according to a propsed three-level-model to deal with the CCl_2 (X~1A_1,A~1B_1,a~3B_1)system.It is found that the total collisional quenching rate constants of CCl_2 A~1B_1 are independent of its vibronic states for a given collisional partner.

机译：脉冲直流放电CCl_4（在Ar中）产生CCl_2自由基。电子态CCl_2（X）自由基被电子激发到A〜1B_1（0,3,0），（0,4,0），（1 Nd：YAG激光泵浦染料激光器在550.56,541.52,532.25,524.31,523.82处产生的3,0），（0,6,0）（1,4,0）和（2,2,0）振动态和分别为523.37nm.CH_3OH，C_2H_5OH，n-C_3H_7OH，n-C_4H_9OH，CH_2Br_2，CH_3COCH_3，CH_3COC_2H_5，NH（CH_3OH，C_2H_5OH，n-C_3H_7OH，n-C_4H_9OH通过观察被激发的CCl_2自由基的时间分辨全激光诱导的荧光（LIF）信号获得_3和n-C_6H_（14）分子，在淬灭的情况下，它们显示出两个指数成分的叠加.A（的淬灭速率常数根据三级模型对实验数据进行分析，推导了CCl_2（X〜1A_1，A〜1B_1，a〜3B_1）系统的CCl_2，k_A和k_a状态，得出了CCl_2，k_A和k_a的状态。 CCl_2 A〜1B_1的总碰撞猝灭速率常数对于给定的碰撞伙伴，它们独立于其振动状态。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2002年第47期|共6页
作者
Yide Gao; Yang Chen; Qin Ran; Xingxiao Ma; Congxiang Chen;
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中图分类物理化学（理论化学）、化学物理学;
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1. Investigation of collisional quenching of CCl_2 (A~1B_1) in different vibrational states [J] . Yide Gao, Yang Chen, Qin Ran, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2002,第47期

机译：不同振动状态下CCl_2（A〜1B_1）的碰撞猝灭研究
2. State-State transitions for CCl_2(X~1A_1,A~1B_1,a~3B_1) radical and collisional quenching of CCl_2(A~1B_1 and a~3B_1) by O_2,N-2,N-2,NO,N_2O,NH-3,and Various aminated molecules [J] . Yide Gao, Qin Ran, Yang Chen, International Journal of Chemical Kinetics . 2002,第6期

机译：CCl_2（X〜1A_1，A〜1B_1，a〜3B_1）自由基的状态转变和O_2，N-2，N-2，NO，N_2O，NH对CCl_2（A〜1B_1和a〜3B_1）的碰撞猝灭-3和各种胺化分子
3. Investigation of collisional quenching of CCl_2(X~1B_1 and a ~3B_1) by some inorganic molecules [J] . Yide Gao, Changjin Hu, Qin Ran, Physical chemistry chemical physics: PCCP . 2002,第7期

机译：一些无机分子对CCl_2（X〜1B_1和〜3B_1）的碰撞猝灭研究
4. Vibrational and rotational quenching of CO by collisions with H, He, and H{sub}2 [C] . Benhui Yang, P. C. Stancil, N. Balakrishnan, NASA Laboratory Astrophysics Workshop . 2006

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5. State-resolved of collisional quenching dynamics of vibrationally excited molecules [D] . Du, Juan 2010

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6. Explanation of efficient quenching of molecular ion vibrational motion by ultracold atoms [O] . Thierry Stoecklin, Philippe Halvick, Mohamed Achref Gannouni, -1

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7. Mutual vibrational quenching in CO + H2 collisions [O] . Forrey, Robert C., Yang, B. H., Stancil, P. C., 2015

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Investigation of collisional quenching of CCl_2 (A~1B_1) in different vibrational states

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