Breakup mechanisms for 7Li + 197Au, 204Pb systems at sub-barrier energies

D.H. Luong; M. Dasgupta; D.J. Hinde; R. du Rietz; R. Rafiei; M. Evers; C.J. Lin; A. Wakhle; K. Ramachandran; I.P. Carter; A. Diaz-Torres

doi:10.1051/epjconf/20136302004

Proceedings

Open Access

EPJ Web of Conferences 63, 02004 (2013)
https://doi.org/10.1051/epjconf/20136302004

Breakup mechanisms for ⁷Li + ¹⁹⁷Au, ²⁰⁴Pb systems at sub-barrier energies

D.H. Luong¹^a, M. Dasgupta¹, D.J. Hinde¹, R. du Rietz¹^,b, R. Rafiei¹^,c, M. Evers¹, C.J. Lin¹^,d, A. Wakhle¹, K. Ramachandran¹^,2, I.P. Carter¹ and A. Diaz-Torres³

¹ Department of Nuclear Physics, The Australian National University, ACT 0200, Australia
² Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
³ ECT*, Villa Tambosi, I-38123 Villazzano, Trento, Italy

^a e-mail: huy.luong@anu.edu.au

Published online: 19 December 2013

Abstract

Coincidence measurements of breakup fragments were carried out for the ⁷Li + ¹⁹⁷Au and ²⁰⁴Pb systems at sub-barrier energies. The mechanisms triggering breakup, and time-scales of each process, were identified through the reaction Q-values and the relative energy of the breakup fragments. Binary breakup of ⁷Li were found to be predominantly triggered by nucleon transfer, with p-pickup leading to ⁸Be → α + α decay being the preferred breakup mode. From the time-scales of each process, the coincidence yields were separated into prompt and delayed components, allowing the identification of breakup process important in the suppression of complete fusion of ⁷Li at above-barrier energies.

Present address: Malmö University, Faculty of Technology and Society, 205 06 Malmö, Sweden

Present address: School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, WA 6009, Australia

Present address: China Institute of Atomic Energy, Beijing 102413, P.R. China

© Owned by the authors, published by EDP Sciences, 2013

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