Cross section measurement for the 14N(n,α0,1)11B reactions in the 4.5–11.5 MeV neutron energy region


Hu Y. Gledenov Y.M. Cui Z. Liu J. Bai H. Xia C. Chen Z. Wu Z. Ren W. Cao W. Fan T. Zhang G. Sansarbayar E. Khuukhenkhuu G. Krupa L. Chuprakov I. Fan Q. Ruan X. Huang H. Ren J. Gao Y. Yang X.
March 2024Springer

European Physical Journal A
2024#60Issue 3

With more accurate measurement method for gas samples, cross sections of the 14N(n,α0,1)11B reactions were measured at 24 energy points in the 4.5–11.5 MeV neutron energy region based on the 4.5 MV Van de Graaff accelerator at Peking University and the HI-13 tandem accelerator of China Institute of Atomic Energy (CIAE). The average neutron fluence (Φ) through the gas sample was obtained through the combination of a highly enriched 238U3O8 sample and the simulation based on SuperMC. The cross sections of the 14N(n,α0)11B reaction measured using the gas sample and the solid samples are in agreement with each other. R-matrix analysis was carried out for the n + 14N system using code RAC in the neutron energy region below 30 MeV. A possible valley structure in both the excitation functions of the 14N(n,α0,1)11B reactions in the 10–11 MeV neutron energy region was found for the first time.



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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
Naval University of Engineering, Wuhan, 430033, China
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Department of Physics, Tsinghua University, Beijing, 100084, China
National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an, 710024, 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 2, 12800, Czech Republic
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan
China Institute of Atomic Energy, Beijing, 102413, China

State Key Laboratory of Nuclear Physics and Technology
Naval University of Engineering
Frank Laboratory of Neutron Physics
Department of Physics
National Key Laboratory of Intense Pulsed Radiation Simulation and Effect
Nuclear Research Centre
Flerov Laboratory of Nuclear Reactions
Institute of Experimental and Applied Physics
The Institute of Nuclear Physics
China Institute of Atomic Energy

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