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.
作者
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
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(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)
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.
