Energy distributions and absolute yields of the long-range alpha particles and the tritons emitted in thermal neutron induced ternary fission of 235U


Wu Z. Liu J. Bai H. Xia C. Ren W. Zhang G. Shi Q. Gledenov Y.M. Sansarbayar E. Khuukhenkhuu G. Chuprakov I. Su C. Dai Y. Zhangsun Y. Guo S.
November 2025Springer

European Physical Journal A
2025#61Issue 11

The energy distributions and the absolute yields of the long-range alpha particles and the tritons emitted in the thermal neutron induced ternary fission of 235U were measured using a twin-gridded ionization chamber and a highly pure thermal neutron beam of the Xi’an pulsed reactor. The mean energy and FWHM of the long-range alpha particles are (15.8 ± 0.3) MeV and (9.5 ± 0.3) MeV, respectively. The mean energy and FWHM of the tritons are (8.4 ± 0.3) MeV and (6.9 ± 0.4) MeV, respectively. The absolute yields of the long-range alpha particles and the tritons are (1.74 ± 0.05) × 10−3 and (1.21 ± 0.07) × 10−4, respectively. These results are discussed and compared with the data from previous measurements.



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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
National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an, 710024, China
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Nuclear Research Centre, National University of Mongolia, Ulaanbaatar, Mongolia
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan

State Key Laboratory of Nuclear Physics and Technology
National Key Laboratory of Intense Pulsed Radiation Simulation and Effect
Frank Laboratory of Neutron Physics
Nuclear Research Centre
The Institute of Nuclear Physics

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