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Wang, H.*; Yasuda, Masahiro*; Kondo, Yosuke*; Nakamura, Takashi*; Tostevin, J. A.*; Ogata, Kazuyuki*; Otsuka, Takaharu*; Poves, A.*; Shimizu, Noritaka*; Yoshida, Kazuki; et al.
Physics Letters B, 843, p.138038_1 - 138038_9, 2023/08
Times Cited Count:2 Percentile:68.16(Astronomy & Astrophysics)Detailed -ray spectroscopy of the exotic neon isotope Ne has been performed using the one-neutron removal reaction from Ne. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N = 20 and N = 28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.
Katsuyama, Kozo; Ishimi, Akihiro; Miwa, Shuhei; Osaka, Masahiko; Yamanaka, Shinsuke*; Kurosaki, Ken*; Muta, Hiroaki*; Oishi, Yuji*; Yoneda, Atsuhiro*
no journal, ,
no abstracts in English
Katsuyama, Kozo; Ishimi, Akihiro; Miwa, Shuhei; Osaka, Masahiko; Yamanaka, Shinsuke*; Kurosaki, Ken*; Muta, Hiroaki*; Oishi, Yuji*; Yoneda, Atsuhiro*
no journal, ,