穆保霞,崔秀花,郭国生,张辽辽

• 1:新疆大学物理科学与技术学院

摘要(Abstract)：

在K-H2和CO2的混合系统中,利用404 nm脉冲激光器激发K原子至K(5P)态后其与H2发生反应,产生KH(X1Σ+,V=0-3)分子.采用泵浦-探测技术,利用OPO脉冲激光器作为"泵浦"激光,泛频激发X1Σ+(V=0)至高位振动态(V=14-21),钛宝石激光器作为探测激光激发KH(X1Σ+)至激发态KH(A1Σ+),在与激光束垂直方向测量A1Σ+(V)→X1Σ+(V)的激光感生荧光光谱(LIF),得到KH(V)与CO2碰撞的猝灭速率系数,得出猝灭速率系数与KH振动量子数V有关系.

关键词(KeyWords)： 激光光谱;碰撞能量转移;泵浦-探测技术;KH-CO2

Abstract:

Keywords:

基金项目(Foundation): 新疆维吾尔自治区自然科学基金(2014211A004)

作者(Author): 穆保霞,崔秀花,郭国生,张辽辽

参考文献(References)：

• [1]Oref I,Tardy D C.Energy transfer in highly excited large polyatomic molecule[J].Chem Rev,1990,90(8):1407-1445.
• [2]Flynn G W,Parmenter C S,Wodtke A M.Vibrational energy transfer[J].J Phys Chem,1996,100(31):12817-12838.
• [3]Barker J R,Yoder L M,King K D.Vibrational energy transfer modeling of nonequilibrium Polyatomic Reaction Systems[J].J Phys Chem,2001,A105(5):796-809.
• [4]Mack J A,Mikulecky K,Wodtke A M.Resonant vibration-vibration energy transfer between highly vibrationally excited O2(X3Σ-g,ν=15-26)and CO2,N2O,N2,and O3[J].J Phys Chem,1996,105(10):4105-4116.
• [5]王青,沈异凡,戴康.激发态Cs2和H2的电子-振转能级的碰撞转移[J].光散射学报,2011,23(1):10-14.
• [6]Yuan L W,Du J,Mullin A S.Energy-dependent dynamics of large-△E collisions:highly vibrationally excited azulene(E～20 390 and 38 580 cm-1)with CO2[J].J Phys Chem,2008,129(1):014303-1/11.
• [7]Chang Y P,Hsiao M K,Liu D K.Rotational and vibrational state distributions of NaH in the reactions of Na(42S,32D,and 62S)with H2:Insertion versus harpoon-type mechanisms[J].J Phys Chem,2008,128(23):234308-1/6.
• [8]Wernli M,Caruso D,Bodo E.Computering a three-dimensional electronic energy manifold for the LiH+H→Li+H2chemical reaction[J].J Phys Chem,2009,A113:1121-1128.
• [9]Cui X H,Mu B X,Shen Y F.Vibrational relaxation and vibration-rotation energy transfer between highly vibrationally excited KH(X1Σ+,ν=14-21)and CO2[J].J Quant Spectrosc Radiat Transf,2012,113(16):2081-2087.
• [10]Wong T H,Kleiber P D,Yang K H.Chemical dynamics of the reaction K*(5p2P)+H2→KH(ν=0;J)+H:Electronic orbital alignment effects[J].J Phys Chem,1999,110(14):6743-6748.
• [11]Liu D K,Lin K C.Rotational population distribution of KH(ν=0,1,2,and 3)in the reaction of K(52PJ,62PJ,and 72PJ)with H2:Reaction mechanism and product energy disposal[J].J Phys Chem,1996,105(20):9121-9129.
• [12]Stwalley W C,Zemke W T,Yang S C.Spectroscopy and structure of the alkali hydride diatomic molecules and their ions[J].J Phys Chem Ref Date,1991,20(7):153-187.
• [13]Wang S Y,Zhang B,Zhu D H.Energy-dependence of vibrational relaxation between highly vibrationally excited KH(X1Σ+,ν=14-23)and H2,and N2[J].Spectrochimica Acta A,1987,43:679-681.