Study of reactions induced by fast neutrons on 10B nucleus with tritium emission using coordinate detector

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Resumo

The interaction of fast neutrons with the 10B nucleus at energies from 3 to 7 MeV is studied with the aim of isolating the reaction with the production of the 8Be* nucleus in an excited state. This reaction stands out from the three-body reaction with the emission of triton and two α-particles. Simulation of ionization losses of secondary 3H and 4He nuclei in solid and gas layers of position-sensitive multiwire detectors with sensitive sizes both a 100 × 100 and 50 × 50 mm2 showed that events are localized in different areas in diagrams plotted from losses in two gas layers. Experimental result with 100 × 100 mm2 detector showed the possibility of isolating a reaction with the emission of 3H and 8Be* nuclei.

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Sobre autores

S. Potashev

Institute for Nuclear Research of the Russian Academy of Sciences; P. N. Lebedev Physical Institute of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: potashev@inr.ru
Rússia, Moscow; Moscow

I. Meshkov

P. N. Lebedev Physical Institute of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

Yu. Burmistrov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

A. Drachev

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

S. Karaevsky

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

A. Kasparov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

E. Permyakov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

V. Ponomarev

Institute for Nuclear Research of the Russian Academy of Sciences

Email: potashev@inr.ru
Rússia, Moscow

Bibliografia

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  3. A. J. Krasznahorkay, M. Csatlós, L. Csige, Z. Gácsi, J. Gulyás, M. Hunyadi, I. Kuti, B. M. Nyakó, L. Stuhl, J. Timár, T. G. Tornyi, Zs. Vajta, T. J. Ketel, and A. Krasznahorkay, Phys. Rev. Lett. 116, 042501 (2016).
  4. J. Kozaczuk, Phys. Rev. D 97, 015014 (2018).
  5. S. I. Potashev, A. A. Afonin, Yu. M. Burmistrov, A. I. Drachev, A. A. Kasparov, S. Kh. Karaevsky, I. V. Meshkov, V. N. Ponomarev, and V. I. Razin, J. Surf. Invest. X-ray 18, 908 (2024).
  6. S. Potashev, A. Drachev, Yu. Burmistrov, S. Karaevsky, A. Kasparov, V. Ponomarev, and G. Solodukhov, EPJ Web Conf. 231, 05010 (2020).
  7. С. И. Поташев, А. А. Каспаров, В. Н. Пономарев, Изв. РАН. Сер. физ. 86, 1304 (2022) [Bull. Russ. Acad. Sci.: Phys. 86, 1079 (2022)].
  8. С. В. Зуев, А. А. Каспаров, Е. С. Конобеевский, Изв. РАН. Сер. физ. 81, 753 (2017) [Bull. Russ. Acad. Sci.: Phys. 81, 679 (2017)].

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2. Fig. 1. Simulated correlation diagram of ionization losses of triton from the reaction n + 10B → 3H + 4He + 4He in two consecutive gaps of a 100 × 100 mm2 detector.

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3. Fig. 2. Simulated correlation diagram of ionization losses of triton from the reaction n + 10B → 3H + 8Be* in two consecutive gaps of a 100×100 mm2 detector.

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4. Fig. 3. Experimental diagram of the correlation of amplitudes caused by charged particles from the interaction of neutrons with the 10B nucleus in two successive gaps of the 100×100 mm2 detector. The dashed area corresponds to the reaction n + 10B → 3H + 8Be.

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5. Fig. 4. Position-sensitive neutron detector with sensitive dimensions of 50 × 50 mm2: 1 and 2 — 10B layers on silicon substrates; 3 and 4 — Al2O3 ceramics-glass-textolite frames with X1 and Y1 coordinate grid wires; 5 — frame with 20 μm anode A wires; 6 and 7 — frames with X2 and Y2 coordinate grid wires.

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6. Fig. 5. Simulated correlation diagram of ionization losses of triton from the reaction n + 10B → 3H + 4He + 4He of the sum of the first two and the sum of the last two gaps of the 50 × 50 mm2 detector.

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7. Fig. 6. Simulated correlation diagram of ionization losses of triton from the reaction n + 10B → 3H + 8Be* of the sum of the first two and the sum of the last two gaps of the 50 × 50 mm2 detector.

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