Pairing Forces Govern Population of Doubly Magic Ca- 54 from Direct Reactions (CROSBI ID 316291)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Browne, F. ; Chen, S. ; Doornenbal, P. ; Obertelli, A. ; Ogata, K. ; Utsuno, Y. ; Yoshida, K. ; Achouri, N. L. ; Baba, H. ; Calvet, D. ; Château, F. ; 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. ; Wimmer, K. ; Yoneda, K. ; Aktas, O. ; Aumann, T. ; Boretzky, K. ; Caesar, C. ; Chung, L. X. ; Flavigny, F. ; Franchoo, S. ; Gašparić, Igor ; Gerst, R.-B. ; Gibelin, J. ; Hahn, K. I. ; Holl, M. ; Kahlbow, J. ; Kim, D. ; Körper, D. ; Koiwai, T. ; Kondo, Y. ; Koseoglou, P. ; Lee, J. ; Lehr, C. ; Linh, B. D. ; Lokotko, T. ; MacCormick, M. ; Miki, K. ; Moschner, K. ; Nakamura, T. ; Park, S. Y. ; Rossi, D. ; Sahin, E. ; Schindler, F. ; Simon, H. ; Söderström, P-A. ; Sohler, D. ; Takeuchi, S. ; Törnqvist, H. ; Tscheuschner, J. ; Vaquero, V. ; Wagner, V. ; Wang, S. ; Werner, V. ; Xu, X. ; Yamada, H. ; Yan, D. ; Yang, Z. ; Yasuda, M. ; Zanetti, L.
engleski
Pairing Forces Govern Population of Doubly Magic Ca- 54 from Direct Reactions
Direct proton-knockout reactions of Sc-55 at similar to 220 MeV/nucleon were studied at the RIKEN Radioactive Isotope Beam Factory. Populated states of Ca-54 were investigated through -ray and invariant-mass spectroscopy. Level energies were calculated from the nuclear shell model employing a phenomenological intemucleon interaction. Theoretical cross sections to states were calculated from distorted-wave impulse approximation estimates multiplied by the shell model spectroscopic factors, which describe the wave function overlap of the Sc- 55 ground state with states in Ca-54. Despite the calculations showing a significant amplitude of excited neutron configurations in the ground-state of Sc-55, valence proton removals populated predominantly the ground state of Ca-54. This counterintuitive result is attributed to pairing effects leading to a dominance of the ground-state spectroscopic factor. Owing to the ubiquity of the pairing interaction, this argument should be generally applicable to direct knockout reactions from odd-even to even-even nuclei.
Nuclear structure ; direct reactions ; radioactive beams
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Podaci o izdanju
126 (25)
2021.
252501
7
objavljeno
0031-9007
1079-7114
10.1103/PhysRevLett.126.252501
