EPJ Web of Conferences (Jan 2016)

Measurement of the 52Fe mass via the precise proton-decay energy of 53Com

  • Shen Yangping,
  • Liu Weiping,
  • Su Jun,
  • Zhang Ningtao,
  • Jing Long,
  • Li Zhihong,
  • Wang Youbao,
  • Guo Bing,
  • Yan Shengquan,
  • Li Yunju,
  • Zeng Sheng,
  • Lian Gang,
  • Du Xianchao,
  • Gan Lin,
  • Bai Xixiang,
  • Wang Jiansong,
  • Zhang Yuhu,
  • Zhou Xiaohong,
  • Tang Xiaodong,
  • He Jianjun,
  • Yang Yanyun,
  • Jin Shilun,
  • Ma Peng,
  • Ma Junbing,
  • Huang Meirong,
  • Bai Zhen,
  • Zhou Yuanjie,
  • Ma Weihu,
  • Hu Jun,
  • Xu Shiwei,
  • Ma Shaobo,
  • Chen Size,
  • Zhang Liyong,
  • Ding Bing,
  • Li Zhihuan

DOI
https://doi.org/10.1051/epjconf/201610904007
Journal volume & issue
Vol. 109
p. 04007

Abstract

Read online

The proton decay of 53Com(3174.1 keV; 19/2−) was investigated via the fragmentation of a 58Ni primary beam. The proton-decay energy was determined with an improved precision to be 1558(8) keV. With this new result and the mass of 53Com, the 52Fe mass excess was derived to be −48330(8) keV, which is in good agreement with the AME12 value. A new recommended value of −48331.6(49) keV is given.