by D. Montanari, S. Leoni, D. Mengoni, G. Benzoni, N. Blasi, G. Bocchi, P. F. Bortignon, A. Bracco, F. Camera, G. Colò, A. Corsi, F. C. L. Crespi, B. Million, R. Nicolini, O. Wieland, J. J. Valiente-Dobon, L. Corradi, G. de Angelis, F. Della Vedova, E. Fioretto, A. Gadea, D. R. Napoli, R. Orlandi, F. Recchia, E. Sahin, R. Silvestri, A. M. Stefanini, R. P. Singh, S. Szilner, D. Bazzacco, E. Farnea, R. Menegazzo, A. Gottardo, S. M. Lenzi, S. Lunardi, G. Montagnoli, F. Scarlassara, C. Ur, G. Lo Bianco, A. Zucchiatti, M. Kmiecik, A. Maj, W. Meczynski, A. Dewald, Th. Pissulla and G. Pollarolo
Abstract:
Neutron rich nuclei around 48Ca have been measured with the CLARA–PRISMA setup, making use of 48Ca on 64Ni binary reactions, at 5.9 MeV/A. Angular distributions of γ rays give evidence, in several transfer channels, for a large spin alignment (≈70%) perpendicular to the reaction plane, making it possible to firmly establish spin and parities of the excited states. In the case of 49Ca, states arising from different types of particle–core couplings are, for the first time, unambiguously identified on basis of angular distribution, polarization and lifetime measurements. Shell model and particle–vibration coupling calculations are used to pin down the nature of the states. Evidence is found for the presence, in the same excitation energy region, of two types of coupled states, i.e. single particle coupled to either 48Ca or 50Ca simple configurations, and particle–vibration coupled states based on the 3− phonon of 48Ca.
Reference:
D. Montanari, S. Leoni, D. Mengoni, G. Benzoni, N. Blasi, G. Bocchi, P. F. Bortignon, A. Bracco, F. Camera, G. Colò, A. Corsi, F. C. L. Crespi, B. Million, R. Nicolini, O. Wieland, J. J. Valiente-Dobon, L. Corradi, G. de Angelis, F. Della Vedova, E. Fioretto, A. Gadea, D. R. Napoli, R. Orlandi, F. Recchia, E. Sahin, R. Silvestri, A. M. Stefanini, R. P. Singh, S. Szilner, D. Bazzacco, E. Farnea, R. Menegazzo, A. Gottardo, S. M. Lenzi, S. Lunardi, G. Montagnoli, F. Scarlassara, C. Ur, G. Lo Bianco, A. Zucchiatti, M. Kmiecik, A. Maj, W. Meczynski, A. Dewald, Th. Pissulla and G. Pollarolo, “Probing the nature of particle–core couplings in 49Ca with γ spectroscopy and heavy-ion transfer reactions”, Physics Letters B, vol. 697, no. 4, pp. 288–293.
Bibtex Entry:
@article{montanari_probing_2011,
title = {Probing the nature of particle–core couplings in {49Ca} with γ spectroscopy and heavy-ion transfer reactions},
volume = {697},
issn = {0370-2693},
url = {http://www.sciencedirect.com/science/article/pii/S0370269311000839},
doi = {10.1016/j.physletb.2011.01.046},
abstract = {Neutron rich nuclei around 48Ca have been measured with the CLARA–PRISMA setup, making use of 48Ca on 64Ni binary reactions, at 5.9 MeV/A. Angular distributions of γ rays give evidence, in several transfer channels, for a large spin alignment (≈70%) perpendicular to the reaction plane, making it possible to firmly establish spin and parities of the excited states. In the case of 49Ca, states arising from different types of particle–core couplings are, for the first time, unambiguously identified on basis of angular distribution, polarization and lifetime measurements. Shell model and particle–vibration coupling calculations are used to pin down the nature of the states. Evidence is found for the presence, in the same excitation energy region, of two types of coupled states, i.e. single particle coupled to either 48Ca or 50Ca simple configurations, and particle–vibration coupled states based on the 3− phonon of 48Ca.},
number = {4},
urldate = {2017-10-24},
journal = {Physics Letters B},
author = {Montanari, D. and Leoni, S. and Mengoni, D. and Benzoni, G. and Blasi, N. and Bocchi, G. and Bortignon, P. F. and Bracco, A. and Camera, F. and Colò, G. and Corsi, A. and Crespi, F. C. L. and Million, B. and Nicolini, R. and Wieland, O. and Valiente-Dobon, J. J. and Corradi, L. and de Angelis, G. and Della Vedova, F. and Fioretto, E. and Gadea, A. and Napoli, D. R. and Orlandi, R. and Recchia, F. and Sahin, E. and Silvestri, R. and Stefanini, A. M. and Singh, R. P. and Szilner, S. and Bazzacco, D. and Farnea, E. and Menegazzo, R. and Gottardo, A. and Lenzi, S. M. and Lunardi, S. and Montagnoli, G. and Scarlassara, F. and Ur, C. and Lo Bianco, G. and Zucchiatti, A. and Kmiecik, M. and Maj, A. and Meczynski, W. and Dewald, A. and Pissulla, Th. and Pollarolo, G.},
month = mar,
year = {2011},
keywords = {Gamma spectroscopy, Magnetic spectrometer, Multi-nucleon transfer, Particle–core coupling},
pages = {288--293},
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}