Mapping of a new deformation region around Ti 62

S. Michimasa, M. Kobayashi, Y. Kiyokawa, S. Ota, R. Yokoyama, D. Nishimura, D. S. Ahn, H. Baba, G. P.A. Berg, M. Dozono, N. Fukuda, T. Furuno, E. Ideguchi, N. Inabe, T. Kawabata, S. Kawase, K. Kisamori, K. Kobayashi, T. Kubo, Y. KubotaC. S. Lee, M. Matsushita, H. Miya, A. Mizukami, H. Nagakura, H. Oikawa, H. Sakai, Y. Shimizu, A. Stolz, H. Suzuki, M. Takaki, H. Takeda, S. Takeuchi, H. Tokieda, T. Uesaka, K. Yako, Y. Yamaguchi, Y. Yanagisawa, K. Yoshida, S. Shimoura

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)


We performed the first direct mass measurements of neutron-rich scandium, titanium, and vanadium isotopes around the neutron number 40 at the RIKEN RI Beam Factory using the time-of-flight magnetic-rigidity technique. The atomic mass excesses of Sc58-60, Ti60-62, and V62-64 were measured for the first time. The experimental results show that the two-neutron separation energies in the vicinity of Ti62 increase compared to neighboring nuclei. This shows that the masses of Ti isotopes near N=40 are affected by the Jahn-Teller effect. Therefore, a development of Jahn-Teller stabilization appears below the Cr isotopes, and the systematics in Sc, Ti, and V isotopes suggest that Ti62 is located close to the peak of the Jahn-Teller effect.

ジャーナルPhysical review letters
出版ステータス出版済み - 9 2020

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)


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