Acta Physica Polonica B

Vol. 40, No. 3, March 2009, page 581

Dynamical Dipole as a Probe of Isospin Dynamics

A. Corsi, O. Wieland, A. Bracco, F. Camera, G. Benzoni, N. Blasi, S. Brambilla, F.C.L. Crespi, A. Giussani, S. Leoni, B. Million, D. Montanari, A. Moroni, V.L. Kravchuk, F. Gramegna, A. Lanchais, P. Mastinu, M. Brekiesz, M. Kmiecik, A. Maj, M. Bruno, E. Geraci, G. Vannini, S. Barlini, G. Casini, M. Chiari, A. Nannini, A. Ordine, M. Di Toro, C. Rizzo, M. Colonna

The \gamma -ray emission due to dynamical dipole oscillations during fusion process was measured for the N/Z asymmetric reaction 16O + 116Sn at 8.1 and 15.6 MeV/u. High-energy \gamma -rays and light charged particles were measured in coincidence with the recoiling residual nuclei. The measured yield of the high-energy \gamma -rays exceeds that of the thermalized compound nucleus and this extra-yield increases with beam energy. Data are compared with theoretical predictions of a dynamical calculation based on Boltzmann–Nordheim–Vlasov (BNV) model.

PACS numbers: 25.70.Gh, 24.30.Cz

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