Eur. Phys. J. A (2010) 44: 403-410
https://doi.org/10.1140/epja/i2010-10976-0

Regular Article - Experimental Physics

Sub- and above-barrier fusion of loosely bound ⁶Li with ²⁸Si

¹ Saha Institute of Nuclear Physics, 1/AF, 700064, Bidhan Nagar, Kolkata, India
² Gurudas College, 700054, Narikeldanga, Kolkata, India
³ Tata Institute of Fundamental Research, Homi Bhabha Road, 400005, Mumbai, India
⁴ Nuclear Physics Division, Bhabha Atomic Research Centre, 400085, Mumbai, India

^* e-mail: harashit.majumdar@saha.ac.in

Received: 4 February 2010
Revised: 18 March 2010
Accepted: 13 April 2010
Published online: 9 May 2010

Abstract

Fusion excitation functions are measured for the system ⁶Li + ²⁸Si using the characteristic -ray method, encompassing both the sub-barrier and above-barrier regions, viz, E _lab = 7-24 MeV. Two separate experiments were performed, one for the above-barrier region ( E _lab = 11-24 MeV) and another for the below-barrier region ( E _lab = 7-10 MeV). The results were compared with our previously measured fusion cross-section for the ⁷Li + ²⁸Si system. We observed the enhancement of the fusion cross-section at sub-barrier regions for both ⁶Li and ⁷Li , but the yield was substantially larger for ⁶Li . However, for well-above-barrier regions, a similar type of suppression was identified for both the systems.