Predissociation of the b^3Пg （v=9） State of He2 Excimer

作     者：李传亮 邓伦毕 张俊丽 杨晓华 陈扬骎 

作者机构：华东师范大学精密光谱科学与技术国家重点实验室物理系上海200062 南通大学理学院南通226007 

出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)

年 卷 期：2011年第24卷第2期

页      面：125-128,I0003页

核心收录：

学科分类：07[理学] 

基　　金：Acknowledgments: This work is supported by the National Natural Science Foundation of China (No.11034002 and No.11004062)  the National Key Basic Research and Development Program of China (No.2010CB922903 and No.2011CB21602)  and the Basic Key Program of Shanghai Municipality (No.07JC14017). Chuan-liang Li is grateful to the support of the PhD Program Scholarship Fund of the East China Normal University 2009. The authors thank Pro- fessor Robert J. LeRoy from University of Waterloo for providing his BCONT  RKR and LEVEL programs and authors are also particularly grateful to Dr. Xing- can Dai from JI-LA and NIST for his helpful and useful suggestions and discussions in simulation 

主　　题：Helium eximer Predissociation Concentration modulation absorption spectroscopy 

摘      要：The predissociation of the v=9 level in the b^3Пg state by the 3∑u^＋ state of helium eximer （He2） was studied based on the newly observed （9, 3） band in the b^3Пg （v=9） system in the region of 12065-12445 cm^-1 employing optical heterodyne-concentration modulation absorption spectroscopy. With the help of the previous potential energy curves and molecular constants of He2, the corresponding predissociation mechanism for the b^3Пg （v=9） state was analyzed. An RKR potential energy curve of b^3Пg and an ab initio potential curve of 3∑g^＋ were used to calculate the predissociation linewidths that show basic agreement with observations, which can quantitatively explain the experiments.