Affiliation:
1. Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India
Abstract
We investigated the enhanced production of nuclei formed via incomplete fusion (ICF) reactions near and above the Coulomb barrier energies (5–8 MeV/A). The cross-sections of the evaporation residues formed in the reactions—11B+124Sn, 10B+124Sn and 11B+122Sn—were measured using off-line gamma-ray spectrometry. The sum rule model (SRM) by Wilczyński et al. predicted the cross-section values too low compared to our experimental results. In earlier studies, the same model has been very successful in explaining ICF reactions at high beam energies (>10 MeV/A). We, therefore, modified the SRM, specifically incorporating the energy dependence in the definition of critical angular momentum ℓcr. The resulting modified SRM gave an improved theoretical estimate for the reactions we studied.
Funder
Board of Research in Nuclear Sciences
Subject
Condensed Matter Physics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics
Reference55 articles.
1. Hodgson, P.E., Gadioli, E., and Gadioli Erba, E. (1997). Introductory Nuclear Physics, Oxford Science Publications, Clarendon Press.
2. Alpha particles and protons emitted in the bombardment of Au197 and Bi209 by C12, N14, and O16 projectiles;Britt;Phys. Rev.,1961
3. Nucleon Transfer Reactions in Grazing Collisions of Heavy Ions;Kaufmann;Phys. Rev.,1961
4. Gamma-rays from an Incomplete fusion reaction induced by 95 MeV 14N;Inamura;Phys. Lett. B,1977
5. Breakup-fusion description of massive transfer reactions with emission of fast light particles;Udagawa;Phys. Rev. Lett.,1980