Measurements of $\gamma$- and neutron-radiation spectra in nuclear reactions with $^{3}$He and $^{9}$Be ions

M. V. Iliasova, A. E. Shevelev, E. M. Khilkevich, I. N. Chugunov, D. N. Doinikov, M. F. Kudoyarov, V. O. Naidenov, I. A. Polunovsky

Ioffe Institute, St. Petersburg

Abstract: We present the measured spectra of $\gamma$ and neutron radiation generated in the $^{9}$Be($^{3}$He, $p\gamma$)$^{11}$B and $^{9}$Be($^{3}$He, $n\gamma$)$^{11}$C nuclear reactions at an energy of 2.57 MeV of $^{3}$He ions using a BC-501A organic detector and an HPGe semiconductor spectrometer. Line shapes of 6.9-MeV $\gamma$-transitions from the $^{9}$Be($^{3}$He, $n\gamma$)$^{11}$C reaction and 8.92-MeV transitions from the $^{9}$Be($^{3}$He, $p\gamma$)$^{11}$B reaction, measured at angles of 0$^\circ$, 30$^\circ$, 60$^\circ$, 90$^\circ$, and 120$^\circ$ have been determined. The angular distribution of protons emitted when populating the 8.92-MeV level of the $^{11}$Be nucleus in $^{9}$Be($^{3}$He, $p\gamma$)$^{11}$B reaction, as well as the energy distribution of neutrons in $^{9}$Be($^{3}$He, $n\gamma$)$^{11}$C reaction, have been reconstructed.

Keywords: neutron spectrometry, $\gamma$ spectrometry, excitation functions, $\gamma$ transition, high-temperature plasma diagnostics.

Received: 18.08.2020
Revised: 07.10.2020
Accepted: 15.10.2020

DOI: 10.21883/PJTF.2021.03.50565.18518

 English version: Technical Physics Letters, 2021, 47:2, 103–106

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