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

Xu, X.; Wang, M.; Zhang, Y-H.; Xu, H.-S.; Shuai, P.; Tu, X.-L.; Litvinov, Y.A.; Zhou, X.-H.; Sun, B.-H.; Yuan, Y.-J.; Xia, J.-W.; Yang, J.-C.; Blaum, Klaus; Chen, R.-J.; Chen, X.-C.; Fu, C.-Y.; Ge, Z.; Hu, Z.-G.; Huang, W.-J.; Liu, D.-W.; Lam, Y.-H.; Ma, X.-W.; Mao, R.-S.; Uesaka, T.; Xiao, G.-Q.; Xing, Y.-M.; Yamaguchi, T.; Yamaguchi, Y.; Zeng, Q.; Yan, X.-L.; Zhao, H.-W.; Zhao, T.-C.; Zhang, W.; Zhan, W.-L.

doi:10.1088/1674-1137/39/10/104001

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

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Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://iopscience.iop.org/article/10.1088/1674-1137/39/10/104001/meta;jsessionid=5892695DFD2CCE4315E9702A329869F8.c3.iopscience.cld.iop.org
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Citation

Xu, X., Wang, M., Zhang, Y.-H., Xu, H.-S., Shuai, P., Tu, X.-L., et al. (2015). Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes. Chinese Physics C, 39(10): 104001. doi:10.1088/1674-1137/39/10/104001.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-00BC-6

Abstract

In this paper, we present direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass excesses of ^52–54Sc nuclides are determined to be −40492(82), −38928(114), −34654(540) keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 (AME12). In particular, ⁵³Sc and ⁵⁴Sc are more bound by 0.8 MeV and 1.0 MeV, 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.