利用泵浦-探测技术研究高振动激发态KH(V=14～21)分子与CO2的振动-转动碰撞转移过程.脉冲激光激发KH分子至高位振动态,与CO2发生振动-转动能量转移,使CO2高位转动态得到布居,通过测量CO2(0000,J=32～48)转动态分布,得到其平均转动能和平均转动能变化,发现振动量子数V从14增加至21时,CO2平均转动能变化增加了2.33倍;测量CO2转动能级的多普勒增宽吸收线,得到V=14和20时,其获得的平均平动能大体随J增大而线性增大;最后,在单一碰撞条件下,测量KH(V=14～21)与CO2(0000,J)的振动-转动碰撞能量转移速率系数,结果显示V=19的总碰撞速率系数是V=14的4.5倍,而V＞19则呈下降趋势.
参考文献
| [1] | 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].Journal of Physical Chemistry,2008128(23):234308-2341/6. |
| [2] | Bai Zhenao;Cui Xiuhua;Zhao Yikun.Experimental evaluation of reactive and nonreactive cross sections in Cs(7D)+H2 collisions[J].量子电子学报,200825(06):670. |
| [3] | Wang Q;Shen Y F;Dai K.Rate coefficients measurement for the energy-pooling collisions Cs(5D)+ Cs(5D)→Cs(6S)+ Cs (nl =9D,11S,7F)[J].Optics communication,2008281:2112-2119. |
| [4] | Li Lin;Xin Jingtao;Liu Jing.Saturation effect and velocity selective population of 5S1/2 →5P3/2 with laser excitation in Rb-H2 vapor[J].量子电子学报,200825(03):266. |
| [5] | Yuan L W;Du J;Mullin A S.Energy-dependent dynamics of large-AE collisions:Highly vibrationally excited azulene (E～20390 and 38580 cm-1) with CO2[J].Journal of Chemical Physics,2008129(01):014303-011/11. |
| [6] | Wong T H;Kleiber P D;Yang K H.Chemical dynamics of the reaction K*(5p2p)+H2 → KH (v =0;J)+ H:Electronic orbital alignment effects[J].Journal of Chemical Physics,1999110:6743-6748. |
| [7] | Campargue A;Bailly D;Teffo J L.The v1 + v3 Dyad of 12CO2 and 13CO2[J].Journal of Molecular Spectroscopy,1999193:204-212. |
| [8] | Lucchesini A;Gozzini S.Diode laser overtone spectroscopy of CO2 at 780 nm[J].J Quant Spectrosc Radiat Transf,200596:289-299. |
| [9] | Giroud M;Nedelec O.Lifetimes and collisions in KH,A1∑+,v' =5-22[J].Journal of Chemical Physics,198277:3998-4005. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%