Evidence for a new nuclear ‘magic number’ from the level structure of 54Ca

D. Steppenbeck (), S. Takeuchi, N. Aoi, P. Doornenbal, M. Matsushita, H. Wang, H. Baba, N. Fukuda, S. Go, M. Honma, J. Lee, K. Matsui, S. Michimasa, T. Motobayashi, D. Nishimura, T. Otsuka, H. Sakurai, Y. Shiga, P.-A. Söderström, T. Sumikama, H. Suzuki, R. Taniuchi, Y. Utsuno, J. J. Valiente-Dobón and K. Yoneda
Additional contact information
D. Steppenbeck: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
S. Takeuchi: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
N. Aoi: Research Center for Nuclear Physics, University of Osaka, Ibaraki, Osaka 567-0047, Japan
P. Doornenbal: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
M. Matsushita: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
H. Wang: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
H. Baba: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
N. Fukuda: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
S. Go: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
M. Honma: Center for Mathematical Sciences, Aizu University, Aizu-Wakamatsu, Fukushima 965-8580, Japan
J. Lee: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
K. Matsui: University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
S. Michimasa: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
T. Motobayashi: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
D. Nishimura: Tokyo University of Science, Noda, Chiba 278-8510, Japan
T. Otsuka: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
H. Sakurai: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
Y. Shiga: Rikkyo University, Toshima, Tokyo 171-8501, Japan
P.-A. Söderström: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
T. Sumikama: Tohoku University, Sendai, Miyagi 980-8578, Japan
H. Suzuki: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
R. Taniuchi: University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
Y. Utsuno: Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
J. J. Valiente-Dobón: Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro 35020, Italy
K. Yoneda: RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan

Nature, 2013, vol. 502, issue 7470, 207-210

Abstract: A spectroscopic study highlights the ‘doubly magic’ nature of 54Ca and provides direct experimental evidence for the onset of a sizable subshell closure at neutron number 34 in isotopes far from stability.

Date: 2013
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DOI: 10.1038/nature12522

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