Affiliation: | 1 Department of Mathematics and Physics,North China Electric Power University,Baoding 071003,China;2 Department of Nuclear Physics,China Institute of Atomic Energy,Bejjing 102413,China;3 School of Physics and Electronic Sciences,Guizhou Normal College,Guiyang 550018,China;4 Department of Mathematics and Physics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;5 College of Physical Science and Technology,Si Chuan University,Chengdu 610065,China |