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24 April 2024

» arxiv » 1309.2149

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Measurement of light charged particles in the decay channels of medium-mass excited compound nuclei
S. Valdre' ; S. Barlini ; G. Casini ; G. Pasquali ; S. Piantelli ; S. Carboni ; M. Cinausero ; F.Gramegna ; T. Marchi ; G. Baiocco ; L. Bardelli ; G. Benzoni ; M. Bini ; N. Blasi ; A. Bracco ; S. Brambilla ; M. Bruno ; F. Camera ; A. Corsi ; F. Crespi ; M. D Agostino ; M. Degerlier ; V. L. Kravchuk ; S. Leoni ; B. Million ; D. Montanari ; L. Morelli ; A. Nannini ; R. Nicolini ; G. Poggi ; G. Vannini ; O. Wieland ; P. Bednarczyk ; M. Ciemała ; J. Dudek ; B. Fornal ; M.Kmiecik ; A. Maj ; M. Matejska-Minda ; K. Mazurek ; W. Meczynski ; S. Myalski ; J. Styczen ; M. Zieblinski ;
Date:	9 Sep 2013
Abstract:	The 48Ti on 40Ca reactions have been studied at 300 and 600 MeV focusing on the fusion-evaporation (FE) and fusion-fission (FF) exit channels. Energy spectra and multiplicities of the emitted light charged particles have been compared to Monte Carlo simulations based on the statistical model. Indeed, in this mass region (A about 100) models predict that shape transitions can occur at high spin values and relatively scarce data exist in the literature about coincidence measurements between evaporation residues and light charged particles. Signals of shape transitions can be found in the variations of the lineshape of high energy gamma rays emitted from the de-excitation of GDR states gated on different region of angular momenta. For this purpose it is important to keep under control the FE and FF processes, to regulate the statistical model parameters and to control the onset of possible preequilibrium emissions from 300 to 600 MeV bombarding energy.
Source:	arXiv, 1309.2149
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