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Alpha Particles Emission in Fast Neutrons Processes on 143Nd Nucleus

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Nuclear reactions induced by fast neutrons starting from 0.5 up to 25 MeV with emission of alpha particles were investigated. Cross-sections, angular correlations and, forward–backward asymmetry effects were evaluated with reaction code TALYS and the author’s own computer codes. Contribution to the cross-section of nuclear reaction mechanisms like direct, compound, and pre-equilibrium together with discrete and continuum states of residual nuclei were determined. Theoretical evaluations are compared with existing experimental data and parameters of nuclear potential in incident and emergent channels were obtained. Using cross section and angular correlation data from reaction code TALYS, the forward–backward effect is obtained for different incident neutron energies and target with given thickness and radius. The simulated forward–backward asymmetry coefficient is sensibly lower than the effect measured in the experiment. The difference can be explained by the presence of other emergent channels including alpha particles and not by the presence of so-called non-statistical effects.

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Funding

The present work was realized with the financial and logistical support of the Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research (Dubna) and the Annual Cooperation Program between the Joint Institute for Nuclear Research (Dubna) and Romanian Research Institutes for 2020 and 2021.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Frank Laboratory for Neutron Physics, 141980, Dubna, Moscow oblast, Russia

    C. Oprea & A. I. Oprea

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  1. C. Oprea
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  2. A. I. Oprea
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Correspondence to C. Oprea.

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The authors declare that they have no conflicts of interest.

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Oprea, C., Oprea, A.I. Alpha Particles Emission in Fast Neutrons Processes on 143Nd Nucleus. Bull. Russ. Acad. Sci. Phys. 86, 1410–1417 (2022). https://doi.org/10.3103/S1062873822110193

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  • DOI: https://doi.org/10.3103/S1062873822110193

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