Orateur
Description
B. Gnoffo1,2, S. Pirrone2, G. Politi1,2, L. Acosta2,3, G. Cardella2, E. De Filippo2, E. Geraci1,2, L. Lo Monaco1, C. Maiolino4, N.S. Martorana1,4, A. Pagano2, E.V. Pagano4, M. Papa2, F. Risitano2,5, F. Rizzo1,4, P. Russotto4 and M. Trimarchi2,5
1) Dipartimento di Fisica e Astronomia E. Majorana, Università di Catania, Italy
2) INFN-Sezione di Catania, Italy
3) Instituto de Fisica, Universidad Nacional Autònoma de México
4) INFN-LNS, Catania Italy
5) Dipartimento di Scienze MIFT, Univ. di Messina, Messina, Italy
The features of alpha particles, emitted in coincidence with Evaporation Residues, produced in the reactions 78Kr + 40Ca and 86Kr + 48Ca at 10 AMeV, have been investigated by using the high capabilities of 4π CHIMERA multidetector.
The thermal evaporation from compound nucleus has been studied within the thermometric method, based on the kinematic approach.
The data analyses show the independence of the energy spectra of evaporated alpha particles from the emission angle in the frame of centre mass and a Maxwellian shape, as it is expected in the case of emission by an equilibrated source. These characteristics have been confirmed, from the comparison with the theoretical prediction of the statistical code GEMINI++.
The values of the temperature, for both systems, have been extracted from these spectra.
Higher temperature has been found for the system with higher neutron enrichment, suggesting that this thermal characteristic is sensitive to the N/Z ratio.
