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Mapping of a New Deformation Region around ^{62}Ti.

Mapping of a New Deformation Region around ^{62}Ti.

Authors :
Michimasa S
Kobayashi M
Kiyokawa Y
Ota S
Yokoyama R
Nishimura D
Ahn DS
Baba H
Berg GPA
Dozono M
Fukuda N
Furuno T
Ideguchi E
Inabe N
Kawabata T
Kawase S
Kisamori K
Kobayashi K
Kubo T
Kubota Y
Lee CS
Matsushita M
Miya H
Mizukami A
Nagakura H
Oikawa H
Sakai H
Shimizu Y
Stolz A
Suzuki H
Takaki M
Takeda H
Takeuchi S
Tokieda H
Uesaka T
Yako K
Yamaguchi Y
Yanagisawa Y
Yoshida K
Shimoura S
Source :
Physical review letters [Phys Rev Lett] 2020 Sep 18; Vol. 125 (12), pp. 122501.
Publication Year :
2020

Abstract

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 ^{58-60}Sc, ^{60-62}Ti, and ^{62-64}V were measured for the first time. The experimental results show that the two-neutron separation energies in the vicinity of ^{62}Ti 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 ^{62}Ti is located close to the peak of the Jahn-Teller effect.

Details

Language :
English
ISSN :
1079-7114
Volume :
125
Issue :
12
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
33016755
Full Text :
https://doi.org/10.1103/PhysRevLett.125.122501