Eur. Phys. J. A (2010) 44: 181-187
https://doi.org/10.1140/epja/i2010-10940-0

Regular Article - Experimental Physics

Projectile breakup dynamics for ⁶Li + ⁵⁹Co : Kinematical analysis of - d coincidences

¹ Departamento de Física Nuclear, Instituto de Física - Universidade de São Paulo, C.P. 66318, 05315-970, São Paulo, SP, Brazil
² Institut Pluridisciplinaire Hubert Curien, UMR 7178, CNRS-IN2P3 and Université Louis Pasteur, Boîte Postale 28, F-67037, Strasbourg, Cedex 2, France
³ Department of Nuclear Reactions, The Andrzej Sołtan Institute for Nuclear Studies, ul. Hoża 69, 00-681, Warsaw, Poland
⁴ Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, GU2 7XH, Guildford, UK

^* e-mail: fsouza@dfn.if.usp.br

Received: 4 September 2008
Revised: 8 February 2010
Accepted: 17 February 2010
Published online: 21 March 2010

Abstract

A study of the kinematics of the -d coincidences in the ⁶Li + ⁵⁹Co system at a bombarding energy of E _lab = 29.6 MeV is presented. With exclusive measurements performed over different angular intervals it is possible to identify the respective contributions of the sequential and direct projectile breakup components. The angular distributions of both breakup components are fairly well described by the Continuum-Discretized Coupled-Channels framework (CDCC). Furthermore, a careful analysis of these processes using a semiclassical approach provides information on both their lifetime and their distance of occurrence with respect to the target. Breakup to the low-lying (near-threshold) continuum is delayed, and happens at large internuclear distances. This suggests that the influence of the projectile breakup on the complete fusion process can be related essentially to the direct breakup to the ⁶Li high-lying continuum spectrum.