MEASUREMENT OF CROSS-SECTION OF THE 7Li(𝑑, 𝑛)8Be REACTIONS AT THE DEUTERON ENERGIES FROM0.4 to 2.1 MeV

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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 reliable estimation of 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 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*, made it possible to measure the effective partial cross sections of the nuclear reaction 7Li(𝑑, 𝑛)8Be with the formation of the Be nucleus in the ground and especially in the first excited state.

About the authors

S. A. Meshchaninov

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Email: S.Meshaninov@iterrf.ru
Moscow, Russia

A. V. Krasilnikov

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

N. B. Rodionov

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

Y. A. Kashchuk

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

S. Y. Obudovsky

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

A. S. Dzhurik

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

T. M. Kormilitsyn

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

R. N. Rodionov

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

V. N. Amosov

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

G. E. Nemtsev

Institution “Project Center ITER”, State Atomic Energy Corporation “Rosatom”

Moscow, Russia

M. I. Bikchurina

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

T. A. Bykov

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

G. D. Verkhovod

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

D. A. Kasatov

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

Ia. A. Kolesnikov

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

G. M. Ostreinov

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

E. O. Sokolova

Budker Institute of Nuclear Physics; Novosibirsk State University

Novosibirsk, Russia; Novosibirsk, Russia

S. Yu. Taskaev

Budker Institute of Nuclear Physics; Novosibirsk State University; Joint Institute for Nuclear Research

Email: taskaev@inp.nsk.su
Novosibirsk, Russia; Novosibirsk, Russia; Dubna, Russia

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