Observation of New Isotope^(131)Ag via the Two-Step Fragmentation Technique  

作　　者：WANG He N.Aoi S.Takeuchi M.Matsushita P.Doornenbal T.Motobayashi D.Steppenbeck K.Yoneda K.Kobayashi J.Lee LIU Hong-Na Y.Kondo R.Yokoyama H.Sakurai YE Yan-Lin 王赫;N.Aoi;S.Takeuchi;M.Matsushita;P.Doornenbal;T.Motobayashi;D.Steppenbeck;K.Yoneda;K.Kobayashi;J.Lee;刘红娜;Y.Kondo;R.Yokoyama;H.Sakurai;叶沿林(School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871;RIKEN Nishina Center,2-1 Hirosawa,Wako,Saitama 351-0198,Japan;Research Center for Nuclear Physics,Osaka University,Ibaraki,Osaka 567-0047,Japan;Center for Nuclear Study,University of Tokyo,RIKEN campus,Wako,Saitama 351-0198,Japan;Department of Physics,Rikkyo University,3-34-1 Nishi-Ikebukuro,Toshima,Tokyo 172-8501,Japan;Department of Physics,Tokyo Institute of Technology,2-12-1 Ookayama,Meguro,Tokyo 152-8551,Japan)

机构地区：[1]School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871 [2]RIKEN Nishina Center,2-1 Hirosawa,Wako,Saitama 351-0198,Japan [3]Research Center for Nuclear Physics,Osaka University,Ibaraki,Osaka 567-0047,Japan [4]Center for Nuclear Study,University of Tokyo,RIKEN campus,Wako,Saitama 351-0198,Japan [5]Department of Physics,Rikkyo University,3-34-1 Nishi-Ikebukuro,Toshima,Tokyo 172-8501,Japan [6]Department of Physics,Tokyo Institute of Technology,2-12-1 Ookayama,Meguro,Tokyo 152-8551,Japan

出　　处：《Chinese Physics Letters》2013年第4期51-54,共4页中国物理快报（英文版）

基　　金：the National Basic Research Program of China under Grant No 2013CB834402;the National Natural Science Foundation of China under Grant Nos 11035001 and 11275011.

摘　　要：We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon.Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity,time of flight,energy loss,and total kinetic energy.

关 键 词：RIGIDITY INTENSE 

分 类 号：O57[理学—粒子物理与原子核物理]