= 32 shell closure below calcium; Low-lying structure of
Ar
カルシウム以下の
=32殻閉殻;
Arの低励起構造
Cort
s, M. L.*; Rodriguez, W.*; Doornenbal, P.*; Obertelli, A.*; Holt, J. D.*; Men
ndez, J.*; 緒方 一介*; Schwenk, A.*; 清水 則孝*; Simonis, J.*; 宇都野 穣
; 吉田 数貴
; Achouri, L.*; 馬場 秀忠*; Browne, F.*; Calvet, D.*; Ch
teau, F.*; Chen, S.*; 千賀 信幸*; Corsi, A.*; Delbart, A.*; Gheller, J.-M.*; Giganon, A.*; Gillibert, A.*; Hilaire, C.*; 磯部 忠昭*; 小林 岳生*; 久保田 悠樹*; Lapoux, V.*; Liu, H. N.*; 本林 透*; Murray, I.*; 大津 秀暁*; Panin, V.*; Paul, N.*; 櫻井 博儀*; 笹野 匡紀*; Steppenbeck, D.*; Stuhl, L.*; Sun, Y. L.*; 栂野 泰宏*; 上坂 友洋*; Wimmer, K.*; 米田 健一郎*; Aktas, O.*; Aumann, T.*; Chung, L. X.*; Flavigny, F.*; Franchoo, S.*; Ga
pari
, I.*; Gerst, R.-B.*; Gibelin, J.*; Hahn, K. I.*; Kim, D.*; 小岩井 拓真*; 近藤 洋介*; Koseoglou, P.*; Lee, J.*; Lehr, C.*; Linh, B. D.*; Lokotko, T.*; MacCormick, M.*; Moschner, K.*; 中村 隆司*; Park, S. Y.*; Rossi, D.*; Sahin, E.*; S
derstr
m, P.-A.*; Sohler, D.*; 武内 聡*; Toernqvist, H.*; Vaquero, V.*; Wagner, V.*; Wang, S.*; Werner, V.*; Xu, X.*; 山田 啓貴*; Yan, D.*; Yang, Z.*; 安田 昌弘*; Zanetti, L.*
Cort
s, M. L.*; Rodriguez, W.*; Doornenbal, P.*; Obertelli, A.*; Holt, J. D.*; Men
ndez, J.*; Ogata, Kazuyuki*; Schwenk, A.*; Shimizu, Noritaka*; Simonis, J.*; Utsuno, Yutaka; Yoshida, Kazuki; Achouri, L.*; Baba, Hidetada*; Browne, F.*; Calvet, D.*; Ch
teau, F.*; Chen, S.*; Chiga, Nobuyuki*; Corsi, A.*; Delbart, A.*; Gheller, J.-M.*; Giganon, A.*; Gillibert, A.*; Hilaire, C.*; Isobe, Tadaaki*; Kobayashi, Takeo*; Kubota, Yuki*; Lapoux, V.*; Liu, H. N.*; Motobayashi, Toru*; Murray, I.*; Otsu, Hideaki*; Panin, V.*; Paul, N.*; Sakurai, Hiroyoshi*; Sasano, Masaki*; Steppenbeck, D.*; Stuhl, L.*; Sun, Y. L.*; Togano, Yasuhiro*; Uesaka, Tomohiro*; Wimmer, K.*; Yoneda, Kenichiro*; Aktas, O.*; Aumann, T.*; Chung, L. X.*; Flavigny, F.*; Franchoo, S.*; Ga
pari
, I.*; Gerst, R.-B.*; Gibelin, J.*; Hahn, K. I.*; Kim, D.*; Koiwai, Takuma*; Kondo, Yosuke*; Koseoglou, P.*; Lee, J.*; Lehr, C.*; Linh, B. D.*; Lokotko, T.*; MacCormick, M.*; Moschner, K.*; Nakamura, Takashi*; Park, S. Y.*; Rossi, D.*; Sahin, E.*; S
derstr
m, P.-A.*; Sohler, D.*; Takeuchi, Satoshi*; Toernqvist, H.*; Vaquero, V.*; Wagner, V.*; Wang, S.*; Werner, V.*; Xu, X.*; Yamada, Hiroki*; Yan, D.*; Yang, Z.*; Yasuda, Masahiro*; Zanetti, L.*
理化学研究所RIBFにおいて、
=32同位体である
Arの低励起構造を陽子・中性子ノックアウト反応,多核子剥離反応,陽子非弾性散乱と
線分光によって調査した。すでに知られていた2つに加えて、3
状態の候補を含む5つの状態を新たに確認した。
coincidenceによって得られた準位図は
模型空間での殻模型計算やカイラル2体・3体力による第一原理計算と比較した。陽子・中性子ノックアウト反応断面積の理論との比較により、新たに発見された2つの状態は2
状態であり、また以前に4
とされていた状態も2
であることが示唆された。
Low-lying excited states in the
= 32 isotope
Ar were investigated by in-beam
-ray spectroscopy following proton- and neutron-knockout, multinucleon removal, and proton inelastic scattering at the RIKEN Radioactive Isotope Beam Factory. The energies of the two previously reported transitions have been confirmed, and five additional states are presented for the first time, including a candidate for a 3
state. The level scheme built using
coincidences was compared to shell-model calculations in the
model space and to
predictions based on chiral two- and three-nucleon interactions. Theoretical proton- and neutron-knockout cross sections suggest that two of the new transitions correspond to 2
states, while the previously proposed 4
state could also correspond to a 2
state.