In heavy ion nuclear reactions the process leading to complete fusion is expected to produce pre-equilibrium gamma-ray emission, if particular conditions are met. Indeed, when there is an N/Z asymmetry between projectile and target, charge equilibration takes place with a collective dipole oscillation, called Dynamical Dipole (DD), associated to a gamma-ray emission. The existing experimental data concerning this pre-equilibrium gamma-ray emission are still rather scarce and manly concentrated in the A similar or equal to 132 mass region. The very preliminary results concerning the measurement of the DD gamma-ray emission in the fusion reaction O-16 (E-lab = 192 MeV) + Sn-116 at 12 MeV/u will be presented and compared with the gamma yield measured for the same reaction at 8.1 and 15.6 MeV/u. The present experiment aims at the measurement of the total emission yield of the DD at 12 MeV/u where the predicted theoretical yield does not completely reproduce the experimental data. The experiment has been performed at the INFN Legnaro Laboratories using the GARFIELD-HECTOR array.

Measurements of Dynamical Dipole in isospin asymmetric fusion reactions / A. Giaz;A Corsi;F Camera;A Bracco;F C L Crespi;S Leoni;R Nicolini;V Vandone;G Benzoni;N Blasi;S Brambilla;B Million;O Wieland;M Cinausero;M. Degelier;F. Gramegna;V L Kravchuk;T Marchi;V Rizzi;L Bardelli;S Barlini;M Bini;S Carboni;G Casini;M Chiari;A Nannini;G. Pasquali;S Piantelli;G Poggi;G Baiocco;M Bruno;M D'agostino;L Morelli;V Vannini;M Colonna;M Di Toro;C Rizzo;P Bednarcyk;M Ciemala;M Kmiecik;A Maj;K Mazurek;W Menczynski;R Alba;C Maiolino;D Santonocito;D. Montanari;A Ordine. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 366:(2012), pp. 012018-1-012018-5. (Intervento presentato al convegno 19th International School on Nuclear Physics, Neutron Physics and Applications tenutosi a Varna; Bulgaria nel 19 September 2011 through 25 September 2011) [10.1088/1742-6596/366/1/012018].

Measurements of Dynamical Dipole in isospin asymmetric fusion reactions

BARDELLI, LUIGI;BARLINI, SANDRO;BINI, MAURIZIO;CARBONI, STEFANO;CASINI, GIOVANNI;PASQUALI, GABRIELE;PIANTELLI, SILVIA;POGGI, GIACOMO;
2012

Abstract

In heavy ion nuclear reactions the process leading to complete fusion is expected to produce pre-equilibrium gamma-ray emission, if particular conditions are met. Indeed, when there is an N/Z asymmetry between projectile and target, charge equilibration takes place with a collective dipole oscillation, called Dynamical Dipole (DD), associated to a gamma-ray emission. The existing experimental data concerning this pre-equilibrium gamma-ray emission are still rather scarce and manly concentrated in the A similar or equal to 132 mass region. The very preliminary results concerning the measurement of the DD gamma-ray emission in the fusion reaction O-16 (E-lab = 192 MeV) + Sn-116 at 12 MeV/u will be presented and compared with the gamma yield measured for the same reaction at 8.1 and 15.6 MeV/u. The present experiment aims at the measurement of the total emission yield of the DD at 12 MeV/u where the predicted theoretical yield does not completely reproduce the experimental data. The experiment has been performed at the INFN Legnaro Laboratories using the GARFIELD-HECTOR array.
2012
Journal of Physics: Conference Series
19th International School on Nuclear Physics, Neutron Physics and Applications
Varna; Bulgaria
19 September 2011 through 25 September 2011
A. Giaz;A Corsi;F Camera;A Bracco;F C L Crespi;S Leoni;R Nicolini;V Vandone;G Benzoni;N Blasi;S Brambilla;B Million;O Wieland;M Cinauser...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/823329
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