中国物理B ›› 2006, Vol. 15 ›› Issue (10): 2288-2296.doi: 10.1088/1009-1963/15/10/017

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The second dissociation threshold bound levels of hydrogen molecule

宋建平1, 严祥安1, 聂志强1, 姜　彤1, 李　岭1, 杜　凯1, 张相臣1, 张彦鹏2, 甘琛利3, E.E. Eyler4, 卢克清5   

  1. (1)Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; (2)Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China;Department of Physics, University of Connecticut, U-3046, Storrs, CT 06269, USA; (3)Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA; (4)Department of Physics, University of Connecticut, U-3046, Storrs, CT 06269, USA; (5)State Key Laboratory of Transient Optics and Technolog
  • 收稿日期:2005-05-29 修回日期:2006-06-09 出版日期:2006-10-20 发布日期:2006-10-20

The second dissociation threshold bound levels of hydrogen molecule

Zhang Yan-Peng(张彦鹏)a)b), Song Jian-Ping(宋建平)a), Gan Chen-Li(甘琛利)c), Yan Xiang-An(严祥安)a), Nie Zhi-Qiang(聂志强)a), Jiang Tong(姜彤)a), Li Ling(李岭)a), Du Kai(杜凯)a), Zhang Xiang-Chen(张相臣)a), Lu Ke-Qing(卢克清)d), and E.E. Eylerb)   

  1. a Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; b Department of Physics, University of Connecticut, U-3046, Storrs, CT 06269, USA; c Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA; d State Key Laboratory of Transient Optics and Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China
  • Received:2005-05-29 Revised:2006-06-09 Online:2006-10-20 Published:2006-10-20

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摘要： The near-threshold highly bound states of all three stable isotopic variants of molecular hydrogen have been studied. Numerous perturbations and unexpected transitions are observed as far as 1cm\sj{-1} just below the second dissociation threshold. This complex structure may arise from a combination of nonadiabatic coupling between B, B', C electronic states, perturbations due to fine and hyperfine interactions, and strong shape resonances. The perturbed near-threshold states and vibrational continuum exhibit finegrained structure, differing greatly between isotopes because of varying nonadiabatic coupling.

关键词: dissociation threshold, nonadiabatic coupling, bound states

Abstract: The near-threshold highly bound states of all three stable isotopic variants of molecular hydrogen have been studied. Numerous perturbations and unexpected transitions are observed as far as 1cm-1 just below the second dissociation threshold. This complex structure may arise from a combination of nonadiabatic coupling between B, B', C electronic states, perturbations due to fine and hyperfine interactions, and strong shape resonances. The perturbed near-threshold states and vibrational continuum exhibit finegrained structure, differing greatly between isotopes because of varying nonadiabatic coupling.

Key words: dissociation threshold, nonadiabatic coupling, bound states

中图分类号:  (Bond strengths, dissociation energies)

  • 33.15.Fm
33.15.Ry (Ionization potentials, electron affinities, molecular core binding energy) 33.80.Gj (Diffuse spectra; predissociation, photodissociation)