The HeI2(ion-pair states) van der Waals complexes

被引:9
作者
Baturo, V. V. [1 ]
Lukashov, S. S. [1 ]
Poretsky, S. A. [1 ]
Pravilov, A. M. [1 ]
Zhironkin, A. I. [1 ]
机构
[1] St Petersburg State Univ, Dept Phys, SPbSU, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
关键词
ION-PAIR STATES; NONADIABATIC TRANSITIONS; HEI2; COMPLEX; GROUND-STATE; DYNAMICS; MOLECULES; IODINE; AR-CENTER-DOT-CENTER-DOT-CENTER-DOT-I-2; AR;
D O I
10.1016/j.cplett.2016.09.021
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
The T-shaped HeI2(E0(g)(+)) van der Waals complexes populated in the HeI2(E,v(E) = 0-2,n(E) = 0 <- B,19, n(B) = 0 <- X,0,n(X)) excitation pathway have been studied. Analysis of the luminescence excitation spectra as well as the I-2(E0(g)(+) -> B0(u)(+), D0(u)(+) -> X0(g)(+), and D'2(g) -> A'2(u)) luminescence, spectra themselves has been carried out. It has been shown that the I-2(D -> X, and D' -> A') luminescence is due to HeI2(E <- B) transitions with subsequent electronic predissociation. We have determined dissociation energies of the HeI2(E,v(E) = 0-2) complexes, vibrational populations of the E, D states and branching ratios of vibrational and electronic predissociations. One can suppose that luminescence of the HeI2(E,v(E) = 0, n(E) = 0) complexes occurs. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:250 / 256
页数:7
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