A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca (CROSBI ID 316118)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Koiwai, T. ; Wimmer, K. ; Doornenbal, P. ; Obertelli, A. ; Barbieri, C. ; Duguet, T. ; Holt, J.D. ; Miyagi, T. ; Navrátil, P. ; Ogata, K. ; Shimizu, N. ; Somà, V. ; Utsuno, Y. ; Yoshida, K. ; Achouri, N.L. ; Baba, H. ; Browne, F. ; Calvet, D. ; Château, F. ; Chen, S. ; Chiga, N. ; Corsi, A. ; Cortés, M.L. ; Delbart, A. ; Gheller, J.-M. ; Giganon, A. ; Gillibert, A. ; Hilaire, C. ; Isobe, T. ; Kobayashi, T. ; Kubota, Y. ; Lapoux, V. ; Liu, H.N. ; Motobayashi, T. ; Murray, I. ; Otsu, H. ; Panin, V. ; Paul, N. ; Rodriguez, W. ; Sakurai, H. ; Sasano, M. ; Steppenbeck, D. ; Stuhl, L. ; Sun, Y.L. ; Togano, Y. ; Uesaka, T. ; Yoneda, K. ; Aktas, O. ; Aumann, T. ; Chung, L.X. ; Flavigny, F. ; Franchoo, S. ; Gašparić, Igor ; Gerst, R.-B. ; Gibelin, J. ; Hahn, K.I. ; Kim, D. ; Kondo, Y. ; Koseoglou, P. ; Lee, J. ; Lehr, C. ; Linh, B.D. ; Lokotko, T. ; MacCormick, M. ; Moschner, K. ; Nakamura, T. ; Park, S.Y. ; Rossi, D. ; Sahin, E. ; Söderström, P.-A. ; Sohler, D. ; Takeuchi, S. ; Toernqvist, H. ; Vaquero, V. ; Wagner, V. ; Wang, S. ; Werner, V. ; Xu, X. ; Yamada, H. ; Yan, D. ; Yang, Z. ; Yasuda, M. ; Zanetti, L.
engleski
A first glimpse at the shell structure beyond 54Ca: Spectroscopy of 55K, 55Ca, and 57Ca
States in the N = 35 and 37 isotopes Ca-55, Ca-57 have been populated by direct proton-induced nucleon removal reactions from Sc-56, Sc-58 and Ca-56 beams at the RIBF. In addition, the (p, 2p) quasi-free single-proton removal reaction from Ca-56 was studied. Excited states in K-55, Ca-55, and Ca-57 were established for the first time via in-beam gamma-ray spectroscopy. Results for the proton and neutron removal reactions from Ca-56 to states in K-55 and Ca-55 for the level energies, excited state lifetimes, and exclusive cross sections agree well with state-of-the-art theoretical calculations using different approaches. The observation of a short- lived state in Ca-57 suggests a transition in the calcium isotopic chain from single-particle dominated states at N = 35 to collective excitations at N = 37.
Radiactive beams ; gamma-ray spectroscopy ; shell evolution
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