Abstract
Protons, deuterons, tritons,α-particles and Li have been studied in coincidence with evaporation residues produced at low impact parameter for the40Ar(1100 MeV)+13C reaction. Experimental characteristics of the light particle — heavy residue correlations, and among them an effect of left-right asymmetry, are analyzed and discussed in some detail on the basis of Monte Carlo simulations. This reaction appears to be governed by an incomplete fusion process. Due to transverse emission of preequilibrium particles, the compound nuclei associated with light-particle-evaporation-residue coincidence events recoil at a non-zero degree lab. angle with some dispersion around this direction. When these effects are introduced into statistical decay calculations, it is then possible to reproduce various experimental results and to understand features like the asymmetry effect. Discrimination of light particles of preequilibrium and of evaporative origin appears possible.
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Zahar, M., Malki, A., Bozin, M. et al. Light charged particles and clusters in coincidence with heavy fragments in the40Ar(1100 MeV)+13C incomplete fusion reaction. Simulated statistical decay analysis. Z. Physik A - Hadrons and Nuclei 339, 465–473 (1991). https://doi.org/10.1007/BF01288430
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DOI: https://doi.org/10.1007/BF01288430