Lifetime measurements of excited states in neutron-richAr44,46populated via a multinucleon transfer reaction
Physical Review C2010Vol. 82(2)
Citations Over TimeTop 10% of 2010 papers
D. Mengoni, J. J. Valiente-Dobón, A. Gadea, S. Lunardi, S. M. Lenzi, R. Broda, A. Dewald, Th. Pissulla, L. Angus, S. Aydin, D. Bazzacco, G. Benzoni, P. G. Bizzeti, A. M. Bizzeti–Sona, P. Boutachkov, L. Corradi, F. C. L. Crespi, G. de Angelis, E. Farnea, E. Fioretto, A. Goergen, M. Górska, A. Gottardo, E. Grodner, A. Howard, W. Królas, S. Leoni, Paolo Mason, D. Montanari, G. Montagnoli, D. R. Napoli, A. Obertelli, R. Orlandi, T. Pawłat, G. Pollarolo, F. Recchia, A. Algora, B. Rubio, E. Şahin, F. Scarlassara, Riccardo Silvestri, J. F. Smith, A. M. Stefanini, D. Steppenbeck, S. Szilner, C. A. Ur, P. Wady, J. Wrzesiński
Abstract
Lifetimes of low-lying excited states of the neutron-rich $^{44,46}\mathrm{Ar}$ nuclei, populated via multinucleon transfer reactions, are measured by means of the differential recoil distance Doppler shift method. The extracted electromagnetic transition probabilities are compared with previous intermediate-energy Coulomb-excitation measurements and with large-scale shell-model calculations. The increase in the deduced $B$($E2;{2}^{+}\ensuremath{\rightarrow}{0}^{+}$) transition probability from $^{44}\mathrm{Ar}$ to the closed-shell nucleus $^{46}\mathrm{Ar}$ contradicts the earlier results of Coulomb-excitation experiments. Shell-model calculations using different effective interactions agree with the new measured values.
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