TY - JOUR

T1 - Measurement of Cross-Section of the 7Li(d,n)8Be Reactions at the Deuteron Energies from 0.4 to 2.1 MeV

AU - Мещанинов, Сергей Алексеевич

AU - Красильников, Анатолий Витальевич

AU - Родионов, Николай Борисович

AU - Обудовский , Сергей Юрьевич

AU - Джурик, Александр Сергеевич

AU - Кормилицын, Тимофей Михайлович

AU - Родионов, Роман Николаевич

AU - Амосов, В.Н.

AU - Немцев, Г.Е.

AU - Бикчурина, Марина Игоревна

AU - Быков, Тимофей Александрович

AU - Верховод, Глеб Дмитриевич

AU - Касатов, Дмитрий Александрович

AU - Колесников, Ярослав Александрович

AU - Остреинов, Георгий Михайлович

AU - Соколова, Евгения Олеговна

AU - Таскаев, Сергей Юрьевич

AU - Kashchuk, Yu. A.

N1 - The study is supported by the Russian Science Foundation, project no. 19-72-30005, https://rscf.ru/project/19-72-30005/.

PY - 2024

Y1 - 2024

N2 - Abstract—Obtaining intense neutron fluxes are required for production of radioactive isotopes, radiation testing of promising materials, neutron diffraction, neutron capture therapy, and other applications. The interaction of deuterons with lithium is characterized by a high neutron yield, a wide variety of reactions, but the available experimental data on the reaction cross-section are scarce and contradictory, which does not allow reliably estimating the yield and spectrum of generated neutrons. In this work, effective partial cross-sections of the nuclear reactions 7Li(d, n) 8Be with the formation of the Be nucleus in the ground and first excited states at deuteron energies from 0.4 to 2.1 MeV were measured at accelerator based neutron source VITA using the developed RBN-A1 fast neutron spectrometric radiometer. It is shown that measurements by the fast detector radiometer with two diamond spectrometric detectors provide a number of advantages over the traditionally used measuring path scintillation detector. Analysis of the high-energy part of the amplitude spectra of diamond detectors, determined by the reactions 12C(n, α) 9Be and 12C(n, α) 9Be*, allowed measuring the effective partial cross-sections of the nuclear reaction 7Li(d, n) 8Be with the formation of the Be nucleus in the ground state and, especially, in the first excited state.

AB - Abstract—Obtaining intense neutron fluxes are required for production of radioactive isotopes, radiation testing of promising materials, neutron diffraction, neutron capture therapy, and other applications. The interaction of deuterons with lithium is characterized by a high neutron yield, a wide variety of reactions, but the available experimental data on the reaction cross-section are scarce and contradictory, which does not allow reliably estimating the yield and spectrum of generated neutrons. In this work, effective partial cross-sections of the nuclear reactions 7Li(d, n) 8Be with the formation of the Be nucleus in the ground and first excited states at deuteron energies from 0.4 to 2.1 MeV were measured at accelerator based neutron source VITA using the developed RBN-A1 fast neutron spectrometric radiometer. It is shown that measurements by the fast detector radiometer with two diamond spectrometric detectors provide a number of advantages over the traditionally used measuring path scintillation detector. Analysis of the high-energy part of the amplitude spectra of diamond detectors, determined by the reactions 12C(n, α) 9Be and 12C(n, α) 9Be*, allowed measuring the effective partial cross-sections of the nuclear reaction 7Li(d, n) 8Be with the formation of the Be nucleus in the ground state and, especially, in the first excited state.

UR - https://link.springer.com/article/10.1134/S1063778824700789

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85217408215&origin=inward&txGid=86e37fdf1f41c645f616f4c7b88472ae

U2 - 10.1134/S1063778824700789

DO - 10.1134/S1063778824700789

M3 - Article

VL - 87

SP - 771

EP - 785

JO - Physics of Atomic Nuclei

JF - Physics of Atomic Nuclei

SN - 1063-7788

IS - 6

ER -