Springer LINK: The European Physical Journal A - Abstract Volume 1 Issue 4 (1998) pp 399-406

The European Physical Journal A

ISSN: 1434-6001 (printed version)
ISSN: 1434-601X (electronic version)

Table of Contents

Abstract Volume 1 Issue 4 (1998) pp 399-406

heavy ion physics: Time-scale and excitation energy partition in sequential binary decays induced by heavy-ion collisions at \simeq6 MeV·A

P. Boccaccio (1), L. Vannucci (1), R.A. Ricci (1)(2), G. Vannini (3)(4), R. Dona (5)(6), I. Massa (5)(6), J.P. Coffin (7), P. Fintz (7), G. Guillaume (7), F. Jundt (7), F. Rami (7), P. Wagner (7)

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

Received: 25 March 1997 / Revised version: 2 December 1997

Abstract: We studied the sequential binary decay of the systems ³²S+⁴⁵Sc, ⁷⁶Ge, ⁸⁹Y, ⁵⁹Co, ⁶³Cu and ¹⁹F+⁶³Cu induced by collisions at \simeq6 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.

PACS: 25.70.Ef Resonances

Communicated by C. Signorini

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