Isospin Mixing in 80Zr : from Finite to Zero Temperature

Articolo

Data di Pubblicazione:

2015

Citazione:

Isospin Mixing in 80Zr : from Finite to Zero Temperature / S. Ceruti, F. Camera, A. Bracco, R. Avigo, G. Benzoni, N. Blasi, G. Bocchi, S. Bottoni, S. Brambilla, F.C.L. Crespi, A. Giaz, S. Leoni, A. Mentana, B. Million, A.I. Morales, R. Nicolini, L. Pellegri, A. Pullia, S. Riboldi, O. Wieland, B. Birkenbach, D. Bazzacco, M. Ciemala, P. Désesquelles, J. Eberth, E. Farnea, A. Görgen, A. Gottardo, H. Hess, D.S. Judson, A. Jungclaus, M. Kmiecik, W. Korten, A. Maj, R. Menegazzo, D. Mengoni, C. Michelagnoli, V. Modamio, D. Montanari, S. Myalski, D. Napoli, B. Quintana, P. Reiter, F. Recchia, D. Rosso, E. Sahin, M.D. Salsac, P.-. Söderström, O. Stezowski, C. Theisen, C. Ur, J.J. Valiente-Dobón, M. Zieblinski. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:22(2015 Nov 27), pp. 222502.1-222502.5.

Abstract:

The isospin mixing was deduced in the compound nucleus Zr80 at an excitation energy of E∗=54 MeV from the γ decay of the giant dipole resonance. The reaction Ca40+Ca40 at Ebeam=136 MeV was used to form the compound nucleus in the isospin I=0 channel, while the reaction Cl37+Ca44 at Ebeam=95 MeV was used as the reference reaction. The γ rays were detected with the AGATA demonstrator array coupled with LaBr3:Ce detectors. The temperature dependence of the isospin mixing was obtained and the zero-temperature value deduced. The isospin-symmetry-breaking correction δC used for the Fermi superallowed transitions was extracted and found to be consistent with β-decay data.

Tipologia IRIS:

01 - Articolo su periodico

Keywords:

Physics and Astronomy (all)

Elenco autori: