Investigation of -nucleus interaction in the scattering and reactionM.N.A. Abdullah1, M.S. Mahbub1, S.K. Das1, 2, A.S.B. Tariq1, M.A. Uddin1, A.K. Basak1, H.M. Sen Gupta3 and F.B. Malik4
1 Department of Physics, University of Rajshahi, Rajshahi, Bangladesh
2 Department of Physics, Shahjalal University of Science & Technology, Sylhet, Bangladesh
3 Department of Physics, University of Dhaka, Dhaka, Bangladesh
4 Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA
(Received: 15 July 2002 / Published online: 10 December 2002)
Full finite-range macroscopic calculations in the distorted-wave Born approximation have been performed using the molecular and Michel -nucleus potentials to analyze the angular distributions of cross-sections of the 27Al( ) 29Si reaction, at 26.5 and 27.2 MeV incident energies, leading to seven transitions up to the excitation energy MeV of the final nucleus. The parameters of the two types of the -nucleus potentials are determined from the elastic-scattering data. Both the molecular and Michel potentials, without any adjustment to the parameters needed to fit the elastic-scattering data, are able in most cases to reproduce, simultaneously, the absolute cross-sections particularly at large angles, where the previous calculations failed to reproduce by orders of magnitude, and the gross pattern of angular distributions of the reaction. The deuteron-cluster spectroscopic factors for most of the seven transitions, deduced using the two - 27Al potentials, differ from those obtained in earlier works. The spectroscopic factor for the ground-state transition, deduced in the present work for the 25.8 MeV data, agrees well with the shell model prediction.
25.55.Ci - Elastic and inelastic scattering.
24.50.+g - Direct reactions.
21.10.Jx - Spectroscopic factors.
© Società Italiana di Fisica, Springer-Verlag 2002