Isospin mixing at finite temperature in 80Zr

Corsi, A.; Bracco, A.; Camera, F.; Crespi, F. C. L.; Giaz, A.; Leoni, S.; Montanari, D.; Nicolini, R.; Vandone, V.; Wieland, O.; Benzoni, G.; Blasi, N.; Brambilla, S.; Million, B.; Kravchuk, V. L.; Cinausero, M.; Degerlier, M.; Gramegna, F.; Marchi, T.; Barlini, Sandro; Bardelli, L.; Bini, Maurizio; Casini, G.; Nannini, Adriana; Pasquali, Gabriele; Poggi, Giacomo; Baiocco, G.; Bruno, M.; D'Agostino, M.; Morelli, L.; Vannini, G.; Ciemala, M.; Kmiecik, M.; Maj, A.; Mazurek, K.; Meczynski, W.; Myalski, S.

doi:10.1088/1742-6596/381/1/012045

The degree of isospin mixing in the hot compound nucleus 80Zr has been extracted by statistical-model analysis of the γ-decay spectrum emitted in fusion reactions 40Ca+40Ca at Ebeam = 200 MeV and 37Cl+44Ca at Ebeam = 153 MeV. In the case of 40Ca+40Ca reaction an hindrance of first-step γ-decay is expected because in self-conjugate nuclei the E1 selection rules forbid the decay between states with isospin I=0. The results obtained at finite temperature (T ~ 2 MeV) have been used to extrapolate the degree of mixing at zero temperature

Isospin mixing at finite temperature in 80Zr / Corsi, A., Bracco, A., Camera, F., Crespi, F.C.L., Giaz, A., Leoni, S., Montanari, D., Nicolini, R., Vandone, V., Wieland, O., Benzoni, G., Blasi, N., Brambilla, S., Million, B., Kravchuk, V.L., Cinausero, M., Degerlier, M., Gramegna, F., Marchi, T., Barlini, S., et al.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 381:(2012), pp. 012045-012050. (Rutherford Centennial Conference on Nuclear Physics Manchester, gbr 2011) [10.1088/1742-6596/381/1/012045].