Study of highly excited vibrational dynamics of HCP integrable system with dynamic potential methods  

作　　者：Aixing Wang Lifeng Sun Chao Fang Yibao Liu 王爱星;孙立风;房超;刘义保(Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,East China University of Technology,Nanchang 330013,China;School of Science,East China University of Technology,Nanchang 330013,China;CNNC High Energy Equipment(Tianjin)Co.,Ltd,Tianjin 300300,China;Lab for High Technology,Tsinghua University,Beijing 100084,China)

机构地区：[1]Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,East China University of Technology,Nanchang 330013,China [2]School of Science,East China University of Technology,Nanchang 330013,China [3]CNNC High Energy Equipment(Tianjin)Co.,Ltd,Tianjin 300300,China [4]Lab for High Technology,Tsinghua University,Beijing 100084,China

出　　处：《Chinese Physics B》2020年第1期203-211,共9页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11505027 and 11104156);the Open Foundation of Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation(Grant No.JXMS201605);the Science and Technology Project of Education Department of Jiangxi Province in2016;the National High Technology Research and Development Program of China(Grant No.2014AA052701)

摘　　要：Highly excited vibrational dynamics of phosphaethyne(HCP)integrable system are investigated based on its dynamic potentials.Taking into consideration the 2:1 Fermi resonance between H–C–P bending vibrational mode and C–P stretching vibrational mode,it is found that the effects of H–C stretching vibrational mode on vibrational dynamic features of the HCP integrable system are significant and regularly vary with Polyad numbers(P number).The geometrical profiles of the dynamic potentials and the corresponding fixed points are sensitive to the variation of H–C stretching vibrational strength when P numbers are small,but are not sensitive when P numbers become larger and the corresponding threshold values become lower.The phase space trajectories of different energy levels in a designated dynamic potential(P=28)were studied and the results indicated that the dynamic potentials govern the various dynamic environments in which the vibrational states lie.Furthermore,action integrals of the energy levels contained in dynamic potential(P=28)were quantitatively analyzed and elucidated.It was determined that the dynamic environments could be identified by the numerical values of the action integrals of trajectories of phase space,which is equivalent with dynamic potentials.Highly excited vibrational dynamics of phosphaethyne(HCP) integrable system are investigated based on its dynamic potentials. Taking into consideration the 2:1 Fermi resonance between H–C–P bending vibrational mode and C–P stretching vibrational mode, it is found that the effects of H–C stretching vibrational mode on vibrational dynamic features of the HCP integrable system are significant and regularly vary with Polyad numbers(P number). The geometrical profiles of the dynamic potentials and the corresponding fixed points are sensitive to the variation of H–C stretching vibrational strength when P numbers are small, but are not sensitive when P numbers become larger and the corresponding threshold values become lower. The phase space trajectories of different energy levels in a designated dynamic potential(P = 28) were studied and the results indicated that the dynamic potentials govern the various dynamic environments in which the vibrational states lie. Furthermore, action integrals of the energy levels contained in dynamic potential(P = 28) were quantitatively analyzed and elucidated. It was determined that the dynamic environments could be identified by the numerical values of the action integrals of trajectories of phase space, which is equivalent with dynamic potentials.

关 键 词：phosphaethyne(HCP) highly excited vibrational state fixed point phase space trajectory 

分 类 号：O643.12[理学—物理化学]