Shell Evolution towards Ni-78: Low-Lying States in Cu-77

SAHIN, E.; GARROTE, F.; TSUNODA, Y.; OTSUKA, T.; DE ANGELIS, G.; GORGEN, A.; NIIKURA, M.; NISHIMURA, S.; XU, Z.; BABA, H.; BROWNE, F.; DELATTRE, M.; DOORNENBAL, P.; FRANCHOO, S.; GEY, G.; HADYNSKA-KLEK, K.; ISOBE, T.; JOHN, P.; Jung, H.; KOJOUHAROV, I.; KUBO, T.; KURZ, N.; LI, Z.; LORUSSO, G.; MATEA, I.; MATSUI, K.; MENGONI, D.; MORFOUACE, P.; NAPOLI, D.; NAQVI, F.; Nishibata, H.; Odahara, A.; SAKURAI, H.; SCHAFFNER, H.; SODERSTROM, P.; Sohler, D.; STEFAN, I.; Sumikama, T.; SUZUKI, D.; TANIUCHI, R.; TAPROGGE, J.; VAJTA, Z.; WATANABE, H.; WERNER, V.; WU, J.; YAGI, A.; Yalcinkaya, Mehtap; YOSHINAGA, K.

doi:10.1103/physrevlett.118.242502

Shell Evolution towards Ni-78: Low-Lying States in Cu-77

Atıf İçin Kopyala

SAHIN E., GARROTE F. L. B., TSUNODA Y., OTSUKA T., DE ANGELIS G., GORGEN A., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.118, sa.24, 2017 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 118 Sayı: 24
Basım Tarihi: 2017
Doi Numarası: 10.1103/physrevlett.118.242502
Dergi Adı: PHYSICAL REVIEW LETTERS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
İstanbul Üniversitesi Adresli: Evet

Özet

The level structure of the neutron-rich Cu-77 nucleus is investigated through beta-delayed gamma-ray spectroscopy at the Radioactive Isotope Beam Factory of the RIKEN Nishina Center. Ions of Ni-77 are produced by inflight 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 Cu-77 are identified for the first time by correlating gamma rays with the beta decay of Ni-77, 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 Ni-78 and suggests a single-particle nature for both the 5/2(1)(-) and 3/2(1)(-) states in Cu-77, leading to doubly magic Ni-78.