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

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

doi:10.1051/epjconf/201610904007

All issues

Volume 109 (2016)

EPJ Web of Conferences, 109 (2016) 04007

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 109, 2016 The 13^th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG2015)


Article Number		04007
Number of page(s)		6
Section		Experimental Nuclear Physics for Astrophysics
DOI		https://doi.org/10.1051/epjconf/201610904007
Published online		12 February 2016

EPJ Web of Conferences 109, 04007 (2016)
https://doi.org/10.1051/epjconf/201610904007

Measurement of the ⁵²Fe mass via the precise proton-decay energy of ⁵³Co^m

Yangping Shen¹, Weiping Liu¹, Jun Su¹, Ningtao Zhang², Long Jing², Zhihong Li¹, Youbao Wang¹, Bing Guo¹, Shengquan Yan¹, Yunju Li¹, Sheng Zeng¹, Gang Lian¹, Xianchao Du¹, Lin Gan¹, Xixiang Bai¹, Jiansong Wang², Yuhu Zhang², Xiaohong Zhou², Xiaodong Tang², Jianjun He², Yanyun Yang², Shilun Jin², Peng Ma², Junbing Ma², Meirong Huang², Zhen Bai², Yuanjie Zhou², Weihu Ma², Jun Hu², Shiwei Xu², Shaobo Ma², Size Chen², Liyong Zhang², Bing Ding² and Zhihuan Li³

¹ China Institute of Atomic Energy, P. O. Box 275(1), Beijing 102413, China
² Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
³ School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China

Published online: 12 February 2016

Abstract

The proton decay of ⁵³Co^m(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 ⁵³Co^m, 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.

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