Complete set of low-spin single-particle excitations in 115I and their evolution toward termination
Journal article, 2026
The very neutron-deficient 115I nucleus has been studied using the 58Ni(64Zn, 1 alpha 3p) reaction and JUROGAM 3 gamma -ray detector array coupled to the MARA recoil-mass separator. The previously known bands have been largely revised and have been extended to high spin by five newly identified rotational bands. Many other levels and transitions have been identified both at low and high spin. A set of nine rotational bands with well-established spins and parities are analyzed. One important result is the observation of the terminating state in one of the bands. Five bands start at low spin and are assigned to the single-particle proton orbitals d5/2, g7/2, g9/2, and h11/2, which are close to the Z = 53 Fermi surface for deformations around e2 = 0.2-0.3. Particle number conserving cranked shell-model calculations have been performed to investigate the evolution of the observed bands at high spin, and have been compared to the cranked Nilsson-Strutinsky calculations, revealing differences in the predicted configurations and nature of the observed crossings in some of the bands.
Author
P. M. Jodidar
Chinese Academy of Sciences
B. F. Lv
Chinese Academy of Sciences
C. M. Petrache
Simon Fraser University
Chinese Academy of Sciences
University Paris-Saclay
X. T. He
Nanjing University of Aeronautics and Astronautics
Q. Q. Zhang
Nanjing University of Aeronautics and Astronautics
C. Andreoiu
Simon Fraser University
A. Astier
University Paris-Saclay
S. Basak
Chinese Academy of Sciences
I. M. Bhat
Chinese Academy of Sciences
K. D. Duan
Chinese Academy of Sciences
S. Guo
Chinese Academy of Sciences
S. T. Wang
Chinese Academy of Sciences
K. K. Zheng
Chinese Academy of Sciences
X. H. Zhou
Chinese Academy of Sciences
K. Auranen
University of Jyväskylä
A. D. Briscoe
University of Liverpool
University of Jyväskylä
P. T. Greenlees
University of Jyväskylä
T. Grahn
University of Jyväskylä
A. Illana
University of Jyväskylä
H. Joukainen
R. Julin
University of Jyväskylä
J. Louko
University of Jyväskylä
M. Luoma
University of Jyväskylä
H. Jutila
University of Jyväskylä
J. Ojala
University of Jyväskylä
J. Pakarinen
University of Jyväskylä
A. M. Plaza
University of Jyväskylä
University of Liverpool
P. Rahkila
University of Jyväskylä
P. Ruotsalainen
University of Jyväskylä
J. Saren
University of Jyväskylä
A. Tolosa-Delgado
University of Jyväskylä
J. Uusitalo
University of Jyväskylä
G. L. Zimba
Louisiana State University
University of Jyväskylä
I. Kuti
Hungarian Research Network
A. Krako
Hungarian Research Network
D. T. Joss
University of Liverpool
R. D. Page
University of Liverpool
A. Ertoprak
Royal Institute of Technology (KTH)
E. A. Cederlof
Royal Institute of Technology (KTH)
PHYSICAL REVIEW C
2469-9985 (ISSN) 2469-9993 (eISSN)
Vol. 114 2 024303Subject Categories (SSIF 2025)
Subatomic Physics
DOI
10.1103/44zk-rh97