Momentum transfer dependence behaviors of ionization and dissociation of oxygen  

作　　者：林梅 刘亚伟 钟志萍 朱林繁 

机构地区：[1]Hefei National Laboratory for Physical Sciences at Microscale,Department of Modern Physics,University of Science and Technology of China [2]School of Physical Sciences,University of the Chinese Academy of Sciences,P.O.Box 4588

出　　处：《Chinese Physics B》2013年第2期223-227,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grants Nos. 10734040,11274291,10979040,and 11074299);the National Basic Research Program of China (Grant No. 2010CB923301);the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103402110027);the Fundamental Research Funds for the Central Universities,China

摘　　要：The decay pathways of the structured ionization region of oxygen at different momentum transfers,i.e.,0,0.23 a.u.（atomic unit）,and 0.91 a.u.,are studied by measuring the ion and the scattered electron coincidently.It is found that the dipole-forbidden superexcited states of（2σu）^-1（c^4Σu^-）npσu ^3Σg^-← X^3Σg^-decay into different channels according to the principal quantum number n.The broad ridge above 35 eV,which may be due to inner-valence excited states of（2σg）^-1nλ or multiply excited states,is observed both at small and large momentum transfers,and its decay channel of O＋＋ O is dominant.The decay pathways of the structured ionization region of oxygen at different momentum transfers,i.e.,0,0.23 a.u.（atomic unit）,and 0.91 a.u.,are studied by measuring the ion and the scattered electron coincidently.It is found that the dipole-forbidden superexcited states of（2σu）^-1（c^4Σu^-）npσu ^3Σg^-← X^3Σg^-decay into different channels according to the principal quantum number n.The broad ridge above 35 eV,which may be due to inner-valence excited states of（2σg）^-1nλ or multiply excited states,is observed both at small and large momentum transfers,and its decay channel of O＋＋ O is dominant.

关 键 词：OXYGEN superexcited states ionization continuum decay channel 

分 类 号：O561.4[理学—原子与分子物理]