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Structure of 136Sn and the Z = 50 magicity
Author(s) -
H. Wang,
N. Aoi,
Satoshi Takeuchi,
Masanori Matsushita,
P. Doornenbal,
T. Motobayashi,
D. Steppenbeck,
K. Yoneda,
H. Baba,
Zs. Dombrádi,
Kazuma Kobayashi,
Y. Kondo,
J. Lee,
Hongna Liu,
R. Minakata,
D. Nishimura,
Hirotaka Otsu,
H. Sakuraï,
D Sohler,
Yong Sun,
Zhuang Tian,
R. Tanaka,
Zsolt Vajta,
Z. Yang,
Tatsuya Yamamoto,
Yanlin Ye,
R. Yokoyama
Publication year - 2014
Publication title -
progress of theoretical and experimental physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 53
ISSN - 2050-3911
DOI - 10.1093/ptep/ptu003
Subject(s) - isotopes of tin , physics , excited state , isotope , tin , atomic physics , excitation , coulomb excitation , neutron , nuclear physics , chemistry , quantum mechanics , organic chemistry
The first 2+ excited state in the neutron-rich tin isotope 136Sn has been identified at 682(13) keV by measuring γ -rays in coincidence with the one proton removal channel from 137Sb. This value is higher than those known for heavier even-even N = 86 isotones, indicating the Z = 50 shell closure. It compares well to the first 2+ excited state of the lighter tin isotope 134Sn, which may suggest that the seniority scheme also holds for 136Sn. Our result confirms the trend of lower 2+ excitation energies of even-even tin isotopes beyond N = 82 compared to the known values in between the two doubly magic nuclei 100Sn and 132Sn. © The Author(s) 2014.published_or_final_versio

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