Proton-hole states in theN=30neutron-rich isotopeK49

Autor: E. Fioretto, G. Montagnoli, S. Zhu, G. de Angelis, M. Trotta, E. Farnea, D. Mengoni, S. Lunardi, R. Silvestri, G. Pollarolo, T. Pawłat, N. Marginean, P. Mason, C. A. Ur, E. Sahin, I. V. Pokrovskiy, R. V. F. Janssens, F. Della Vedova, Fernando Scarlassara, J. J. Valiente-Dobón, Suzana Szilner, J. Wrzesiński, W. Królas, D. R. Napoli, M. P. Carpenter, R. Broda, L. Corradi, B. Fornal, B. Guiot, P. F. Mantica, A. M. Stefanini, B. Szpak, R. Orlandi, A. Gadea
Rok vydání: 2010
Předmět:
Zdroj: Physical Review C. 82
ISSN: 1089-490X
0556-2813
DOI: 10.1103/physrevc.82.034319
Popis: Excited states in the N=30 neutron-rich isotope {sup 49}K have been studied using multinucleon transfer reactions with thin targets and the PRISMA-CLARA spectrometer combined with thick-target {gamma}-coincidence data from Gammasphere. The d{sub 3/2} proton-hole state is located 92 keV above the s{sub 1/2} ground state, and the proton-particle f{sub 7/2} state is suggested at 2104 keV. Three other levels are established as involving the coupling to 2{sup +} of two neutrons above the N=28 shell. The measured or estimated lifetimes served to reinforce the interpretation of the observed level structure, which is found to be in satisfactory agreement with shell-model calculations.
Databáze: OpenAIRE