In heavy ion reactions, in the case of N/Z asymmetry between projectile and target, the process leading to complete fusion is expected to produce pre-equilibrium dipole γ-ray emission. It is generated during the charge equilibration process and it is known as Dynamical Dipole. A new measurement of the dynamical dipole emission was performed by studying 16O + 116Sn at 12 MeV/u. These data, together with those measured at 8.1 MeV/u and 15.6 MeV/u for the same reaction, provide the dependence on the Dynamical Dipole total emission yield with beam energy and they can be compared with theoretical expectations. The experimental results show a weak increase of the Dynamical Dipole total yield with beam energies and are in agreement with the prediction of a theoretical model based on the Boltzmann-Nordheim-Vlasov (BNV) approach. The measured trend with beam energy does not confirm the rise and fall behavior previously reported for the same fused compound but with a much higher dipole moment. © Owned by the authors, published by EDP Sciences, 2014.
Dynamical dipole and equation of state in N/Z asymmetric fusion reactions / A. Giaz, A. Corsi, F. Camera, O. Wieland, V.L. Kravchuk, S. Barlini, R. Alba, P. Bednarczyk, A. Bracco, G. Baiocco, L. Bardelli, G. Benzoni, M. Bini, N. Blasi, S. Brambilla, M. Bruno, G. Casini, M. Ciemala, M. Cinausero, M. Chiari, M. Colonna, F.C.L. Crespi, M. D'Agostino, M. Degerlier, M. Di Toro, F. Gramegna, M. Kmiecik, S. Leoni, C. Maiolino, A. Maj, T. Marchi, K. Mazurek, W. Meczynski, B. Million, D. Montanari, L. Morelli, A. Nannini, R. Nicolini, G. Pasquali, S. Piantelli, A. Ordine, G. Poggi, V. Rizzi, C. Rizzo, D. Santonocito, V. Vandone, G. Vannini - In: EPJ Web of Conferences / [a cura di] Lunardi, S.. - [s.l] : EPJ, 2014. - pp. 03033 (( convegno 2013 International Nuclear Physics Conference, INPC 2013 tenutosi a Firenze, ita nel 2013.
Dynamical dipole and equation of state in N/Z asymmetric fusion reactions
A. Giaz;A. Corsi;F. Camera;A. Bracco;F.C.L. Crespi;S. Leoni;D. Montanari;R. Nicolini;V. Vandone;
2014
Abstract
In heavy ion reactions, in the case of N/Z asymmetry between projectile and target, the process leading to complete fusion is expected to produce pre-equilibrium dipole γ-ray emission. It is generated during the charge equilibration process and it is known as Dynamical Dipole. A new measurement of the dynamical dipole emission was performed by studying 16O + 116Sn at 12 MeV/u. These data, together with those measured at 8.1 MeV/u and 15.6 MeV/u for the same reaction, provide the dependence on the Dynamical Dipole total emission yield with beam energy and they can be compared with theoretical expectations. The experimental results show a weak increase of the Dynamical Dipole total yield with beam energies and are in agreement with the prediction of a theoretical model based on the Boltzmann-Nordheim-Vlasov (BNV) approach. The measured trend with beam energy does not confirm the rise and fall behavior previously reported for the same fused compound but with a much higher dipole moment. © Owned by the authors, published by EDP Sciences, 2014.
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