Time-scale and excitation energy partition in sequential binary decays induced by heavy-ion collisions at ≃6 MeV·A期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Time-scale and excitation energy partition in sequential binary decays induced by heavy-ion collisions at ≃6 MeV·A

Authors:	P. Boccaccio L. Vannucci R.A. Ricci G. Vannini R. Dona I. Massa J.P. Coffin P. Fintz G. Guillaume F. Jundt F. Rami P. Wagner

Affiliation:	(1) Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy, IT;(2) Dipartimento di Fisica dell'Universita'di Padova, I-35100 Padova, Italy, IT;(3) Dipartimento di Fisica dell'Universita' di Trieste, I-34100 Trieste, Italy,, IT;(4) Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34100 Trieste, Italy, IT;(5) Dipartimento di Fisica dell'Universita' di Bologna, I-40100 Bologna, Italy,, IT;(6) Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, I-40100 Bologna, Italy, IT;(7) Centre de Recherches Nucleaires, Universite' Louis Pasteur, F-67037 Strasbourg, France, FR

Abstract:	We studied the sequential binary decay of the systems ³²S+⁴⁵Sc, ⁷⁶Ge, ⁸⁹Y, ⁵⁹Co, ⁶³Cu and ¹⁹F+⁶³Cu induced by collisions at ≃6 MeV·A. The two stages of the process have reaction-times compatible with the dynamics of different mechanisms. The study of the excitation energy partition shows that the reaction mechanism of the first step has influence on the de-excitation of the primary fragments producing two decay components which have different time scale. Received: 25 March 1997 / Revised version: 2 December 1997

Keywords:	PACS:25.70.Ef Resonances
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