Eur. Phys. J. A 12, 317-325 (2001)
Complete and incomplete fusion in reactions of + at and 68 MeV from analysis of recoil range and light-particle measurementsR.I. Badran1, D.J. Parker2 and I.M. Naqib3
1 Physics Department, The Hashemite University, P.O. Box 150459, Zarqa, Jordan
2 School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
3 12 Fogwell Road, Oxford OX2 9SA, UK
(Received: 29 March 2001 / Revised version: 28 August 2001 Communicated by J. Äystö)
Excitation functions for the production of eight radioactive products of the reactions of on have been measured up to MeV. Recoil range distributions for these products, together with inclusive proton, deuteron, triton and alpha spectra, have been measured at energies of 50 and 68 MeV. The , t and d spectra show characteristic "break-up" components at forward angles, while the recoil distributions show evidence of complete fusion and incomplete-fusion process ( , ) . A parallel study on shows some evidences of the ( ,t) incomplete-fusion process, but the cross-section for this process is significantly less than for the triton fusion process. The recoil distributions can be reproduced on the assumption that essentially all the observed break-up fragments are in fact associated with incomplete fusion, but uncertainties in normalisation leave open the possibility of a significant contribution of pure break-up. A diffraction model of the ( , ) transfer process reproduces the observed break-up spectra with some success.
25.70.-z - Low and intermediate energy heavy-ion reactions.
25.70.Jj - Fusion and fusion-fission reactions.
25.70.Hi - Transfer reactions.
© Società Italiana di Fisica, Springer-Verlag 2001