Abstract
Mechanisms of heavy-ion induced nuclear reactions in mass-asymmetric systems were studied by focusing on the nucleon transfer reaction. Excitation functions and projected mean recoil ranges for the target-like products in37-,16O-,14N-, and12C-induced reactions on197Au were measured by means ofγ-ray spectrometry. The energy range studied was near the Coulomb barrier of the systems with incident energies below 10 MeV/u. Nucleon transfer reactions were discussed by distinguishing the products from quasi-elastic transfer (QET) and those from deep inelastic transfer (DIT). The tendency towards equilibration of theN/Z value and the energy damping, which are the characteristic features of DIT, were found in the production of Au isotopes. Observations are consistent with the generally accepted concept that QET takes place along a trajectory near the Coulomb trajectory. QET was made to be connected with the interaction radius and most of the cross section ratios were reproduced well by an extended tunneling model.
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The authors are indebted to T. Suzuki of JAERI for his help in theγ-ray measurement and I. Fujiwara of Otemon Gakuin University for his valuable suggestions and help in the chemical procedures. This work is supported in part by a grant of No. 58430011 in Aid of Scientific Research, Ministry of Education, Science and Culture, Japan.
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Yokoyama, A., Saito, T., Shoji, M. et al. Nucleon transfer in highly mass-asymmetric reaction systems between197Au and relatively light projectiles in the energy region below 10 MeV/u. Z. Physik A - Atomic Nuclei 332, 61–69 (1989). https://doi.org/10.1007/BF01292581
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DOI: https://doi.org/10.1007/BF01292581