JIANG Xiu lan1,2, |YANG Guang2, |SUN Cheng lin2, LI Zhan long2, LI Dong fei2, LI Zuo wei2
1. School of Science, Qingdao Technological University, Qingdao 266033, Shandong Province, China|2. College of Physics, Jilin University, Changchun 130012, |China