Direct mass measurements of neutron-rich ^(86)Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

查看全文 作　　者：[1,2,3]徐星;[1]王猛;[1]张玉虎;[1]徐瑚珊;[4]帅鹏;[1,5]涂小林;Yuri [1,5]A.Litvinov;[1]周小红;[6]孙保华;[1]原有进;[1]夏佳文;[1]杨建成;Klaus [7]Blaum;[1]陈瑞九;[1,2]陈相成;[1,2]付超义;[1,2]葛壮;[1]胡正国;[1,2]黄文嘉;[1,2]刘大委;[1]蓝乙华;[1]马新文;[1]毛瑞士;[8]T.Uesaka;[1]肖国青;[1,2]邢元明;[9]T.Yamaguchi;[8]Y.Yamaguchi;[4]曾奇;[1]颜鑫亮;[1,2]赵红卫;[1]赵铁成;[1]章卫;[1]詹文龙

机构地区：[1]Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science,Institute of Modern Physics, Chinese Academy of Sciences;[2]University of Chinese Academy of Sciences;[3]CSNSM-IN2P3-CNRS, Université de Paris Sud;[4]Research Center for Hadron Physics, National Laboratory of Heavy Ion Accelerator Facility in Lanzhou and University of Science and Technology of China;[5]GSI Helmholtzzentrum für Schwerionenforschung;[6]School of Physics and Nuclear Energy Engineering, Beihang University;[7]Max-Planck-Institut fr Kernphysik;[8]RIKEN Nishina Center;[9]Department of Physics, Saitama University

出　　处：《Chinese Physics C》索引2015年第39卷第10期,共5页

基　　金：Supported by 973 Program of China(2013CB834401);the NSFC(U1232208,U1432125,11205205,11035007);the Helmholtz-CAS Joint Research Group(HCJRG-108) 摘　　要：In this paper, we present direct mass measurements of neutron-rich86 Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry(IMS) method. The new mass excesses of52-54 Sc nuclides are determined to be-40492(82),-38928(114),-34654(540) ke V, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012(AME12).In particular,53 Sc and54Sc are more bound by 0.8 Me V and 1.0 Me V, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number N =32 in Sc isotopes. 关键词：质量测量 C同位素丰中子幻数破片弹丸加速器质谱中子数

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Direct mass measurements of neutron-rich ^(86)Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

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