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Phys. Rev. Lett. 103, 232702 (2009) [4 pages]

Exploring Fusion at Extreme Sub-Barrier Energies with Weakly Bound Nuclei

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A. Shrivastava1,2,*, A. Navin2, A. Lemasson2, K. Ramachandran1, V. Nanal3, M. Rejmund2, K. Hagino4, T. Ichikawa5, S. Bhattacharyya6, A. Chatterjee1, S. Kailas1, K. Mahata1, V. V. Parkar1,3, R. G. Pillay3, and P. C. Rout1
1Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
2GANIL, CEA/DSM–CNRS/IN2P3, Boulevard Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
3DNAP, Tata Institute of Fundamental Research, Mumbai 400005, India
4Department of Physics, Tohuku University, Sendai 980-8578, Japan
5Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
6Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700064, India

Received 3 July 2009; published 3 December 2009

Results of measurement of residues formed in fusion of 6Li with 198Pt in the energy range of 0.68<E/Vb<1.3 using a new sensitive off-beam technique are reported. The fusion excitation function and the derived average angular momenta do not indicate a change of slope at deep sub-barrier energies, contrary to recent observations. The present results for a system with weakly bound projectile confront the current understanding of the fusion hindrance at these low energies, underlying the role of internal reorganization on the dynamical path towards fusion.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.232702
DOI:
10.1103/PhysRevLett.103.232702
PACS:
25.70.Jj, 25.60.Je

*aradhana@barc.gov.in

 
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