Structure of 136Sn and the Z = 50 magicity

• Published in: Progress of theoretical and experimental physics Vol. 2014; no. 2; p. 23
• Main Authors: Wang, He, Aoi, Nori, Takeuchi, Satoshi, Matsushita, Masafumi, Doornenbal, Pieter, Motobayashi, Tohru, Steppenbeck, David, Yoneda, Kenichiro, Baba, Hidetada, Dombrádi, Zsolt, Kobayashi, Kota, Kondo, Yosuke, Lee, Jenny, Liu, Hong-Na, Minakata, Ryogo, Nishimura, Daiki, Otsu, Hideaki, Sakurai, Hiroyoshi, Sohler, Dora, Sun, Ye-Lei, Tian, Zheng-Yang, Tanaka, Ryuki, Vajta, Zsolt, Yang, Zai-Hong, Yamamoto, Tetsuya, Ye, Yan-Lin, Yokoyama, Rin
• Format: Journal Article
• Language: English
• Published: Oxford University Press 01-02-2014
• Subjects: D27; D13
• ISSN: 2050-3911; 2050-3911
• DOI: 10.1093/ptep/ptu003

The first
excited state in the neutron-rich tin isotope
Sn has been identified at 682(13) keV by measuring
-rays in coincidence with the one proton removal channel from
Sb. This value is higher than those known for heavier even-even
isotones, indicating the
shell closure. It compares well to the first
excited state of the lighter tin isotope
Sn, which may suggest that the seniority scheme also holds for
Sn. Our result confirms the trend of lower
excitation energies of even-even tin isotopes beyond
compared to the known values in between the two doubly magic nuclei
Sn and
Sn.