Open AccessShell Evolution towards Ni 78 Cu 77
Author(s) -
E. Şahin,
F. L. Bello Garrote,
Y. Tsunoda,
Takaharu Otsuka,
G. de Angelis,
A. Görgen,
M. Nııkura,
S. Nishimura,
Z. Y. Xu,
H. Baba,
F. Browne,
M.-C. Delattre,
P. Doornenbal,
S. Franchoo,
G. Gey,
K. Hadyńska-Klk,
T. Isobe,
P. R. John,
H. S. Jung,
I. Kojouharov,
T. Kubo,
N. Kurz,
Z. Li,
G. Lorusso,
I. Matéa,
K. Matsui,
D. Mengoni,
P. Morfouace,
D. R. Napoli,
F. Naqvi,
H. Nıshıbata,
A. Odahara,
H. Sakuraï,
H. Schaffner,
P.-A. Söderström,
D. Sohler,
I. Stefan,
T. Sumikama,
D. Suzuki,
R. Taniuchi,
J. Taprogge,
Zs. Vajta,
H. Watanabe,
V. Werner,
J. Wu,
A. Yagi,
M. Yalçınkaya,
K. Yoshinaga
Publication year - 2017
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.118.242502
Subject(s) - physics , excited state , gamma spectroscopy , atomic physics , crystallography , spectroscopy , chemistry , quantum mechanics
International audienceThe level structure of the neutron-rich 77Cu nucleus is investigated through β-delayed γ-ray spectroscopy at the Radioactive Isotope Beam Factory of the RIKEN Nishina Center. Ions of 77Ni are produced by in-flight fission, separated and identified in the BigRIPS fragment separator, and implanted in the WAS3ABi silicon detector array, surrounded by Ge cluster detectors of the EURICA array. A large number of excited states in 77Cu are identified for the first time by correlating γ rays with the β decay of 77Ni, and a level scheme is constructed by utilizing their coincidence relationships. The good agreement between large-scale Monte Carlo shell model calculations and experimental results allows for the evaluation of the single-particle structure near 78Ni and suggests a single-particle nature for both the 5/2−1 and 3/2−1 states in 77Cu, leading to doubly magic 78Ni