Rotational-resolved pulsed field ionization photoelectron bands for H2+(X2Σg+, v+ = 0, 2, 9, and 11)

被引:40
作者
Stimson, S
Chen, YJ
Evans, M
Liao, CL
Ng, CY [1 ]
Hsu, CW
Heimann, P
机构
[1] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA
[2] Iowa State Univ, Dept Chem, Ames, IA 50011 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Accelerator & Fus Res, Adv Light Source, Berkeley, CA 94720 USA
关键词
D O I
10.1016/S0009-2614(98)00412-6
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present here the assignment and simulation of rotational transitions for the H-2(+) (X-2 Sigma(g)(+), upsilon(+) = 0,2,9 and 11) vibronic bands using the Buckingham-Orr-Sichel (BOS) model. The simulation shows that perturbation of PFI-PE rotational line intensities due to near-resonance autoionization decreases as upsilon(+) increases. Experimental rotational constants for H-2(+) (X-2 Sigma(g)(+), upsilon(+) = 0,2,9 and 11) are determined with higher accuracy than those obtained in previous HeI and NeI photoelectron studies. In agreement with previous experimental and theoretical investigations, only the Delta N=0 and +/-2 rotational branches are observed in the PFI-PE spectrum for H-2. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:507 / 515
页数:9
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