The degree of isospin mixing in the hot compound nucleus Zr-80 has been extracted by statistical-model analysis of the gamma-decay spectrum emitted in fusion reactions Ca-40+Ca-40 at E-beam= 200 MeV and Cl-37+Ca-44 at E-beam= 153 MeV. In the case of Ca-40+Ca-40 reaction an hindrance of first-step gamma-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 similar to 2 MeV) have been used to extrapolate the degree of mixing at zero temperature.

Isospin mixing at finite temperature in Zr-80 / A. Corsi, A. Bracco, F. Camera, F.C.L. Crespi, A. Giaz, S. Leoni, D. Montanari, R. Nicolini, V. Vandone, O. Wieland, G. Benzoni, N. Blasi, S. Brambilla, B. Million, V.L. Kraychuk, M. Cinausero, M. Degerlier, F. Gramegna, T. Marchi, S. Barlini, L. Bardelli, M. Bini, G. Casini, A. Nannini, G. Pasquali, G. Poggi, G. Baiocco, M. Bruno, M. D'Agostino, L. Morelli, G. Vannini, M. Ciemala, M. Kmiecik, A. Maj, K. Mazurek, W. Meczynski, S. Myalski. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 381(2012), pp. 012045.1-012045.6. ((Intervento presentato al convegno Rutherford Centennial Conference on Nuclear Physics tenutosi a Manchester nel 2011 [10.1088/1742-6596/381/1/012045].

Isospin mixing at finite temperature in Zr-80

A. Corsi;A. Bracco;F. Camera;F.C.L. Crespi;A. Giaz;S. Leoni;D. Montanari;R. Nicolini;V. Vandone;
2012

Abstract

The degree of isospin mixing in the hot compound nucleus Zr-80 has been extracted by statistical-model analysis of the gamma-decay spectrum emitted in fusion reactions Ca-40+Ca-40 at E-beam= 200 MeV and Cl-37+Ca-44 at E-beam= 153 MeV. In the case of Ca-40+Ca-40 reaction an hindrance of first-step gamma-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 similar to 2 MeV) have been used to extrapolate the degree of mixing at zero temperature.
giant-dipole resonance; isobaric analog resonances; proton-DRIP-line; nuclei; symmetry; states; restoration; excitation; radiation; decay
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
File in questo prodotto:
File Dimensione Formato  
pdf.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 367.04 kB
Formato Adobe PDF
367.04 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/248486
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact