The a cluster effect in the neutron-induced a emitting reactions of Zn nuclei
Liu J. Zhang G. Gledenov Y.M. Cui Z. Hu Y. Bai H. Ruan X. Ren J. Huang H. Fan Q. Han Y. Xia C. Wu Z. Ren W. Fan T. Chen J. Cao W. Sansarbayar E. Khuukhenkhuu G. Krupa L. Chuprakov I. Wang X. Shao B. Zhao L.
December 2025Elsevier B.V.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
2025#871
The relationship between neutron-induced nuclear reactions and the α cluster structure has rarely been studied to date. In this work, the (n, α) reactions are selected as a subject and the emitting α particles from the 63Cu, 64,66,67Zn(n, α) reactions were measured. Measurement results show that the emission of high-energy α particles from the 64,66,67Zn(n, α) reaction holds an unusually strong non-statistical equilibrium phenomenon, while this phenomenon does not exist in the 63Cu(n, α) reaction. It is found that the α cluster effect in (n, α) reactions is more obvious for the nuclei with Z equals magic number plus 2, which leads to the non-statistical equilibrium emission of α particles. The strength of the α cluster effect in the (n, α) reactions is positively correlated with the incident neutron energy and tentative evidence of a weak negative correlation to the neutron number in the target nucleus is observed. For the first time, the α cluster effect in the (n, α) reactions is experimentally discovered, contributes to the understanding of cluster structure effects in neutron-induced nuclear reactions. In addition, the present measurement data is also helpful for the nuclear data evaluations of the 64,66,67Zn(n, α) reactions.
Magic number , Neutron-induced nuclear reactions , Non-statistical equilibrium , α Cluster
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State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
China Institute of Nuclear Industry Strategy (CINIS), Beijing, 100048, China
China Institute of Atomic Energy, Beijing, 102413, China
Nuclear Research Centre, National University of Mongolia, Ulaanbaatar, Mongolia
Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horska 3a/22, Prague, 212800, Czech Republic
Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, 779 00, Czech Republic
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan
State Key Laboratory of Nuclear Physics and Technology
Frank Laboratory of Neutron Physics
China Institute of Nuclear Industry Strategy (CINIS)
China Institute of Atomic Energy
Nuclear Research Centre
Flerov Laboratory of Nuclear Reactions
Institute of Experimental and Applied Physics
Faculty of Science
The Institute of Nuclear Physics
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