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Fast Neutron Yields Generated from Deuteron Break-up in Low Energy Reactions of Light Nuclei

Bém, P
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Burjan, V
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Cvachovec, F
Military Academy,

Götz, M
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Kroha, V
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Nikolskii, EY
Russian Research Center, Kurchatov Institute,

Šimečková, E
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Štursa, J
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Vincour, J
Nuclear Physics Institute, Academy of Sciences of the Czech Republic,

Pages: 7    Published: Jan 2001

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Source: STP1398-EB

Abstract

Investigation of neutron production by break-up processes in light-nuclei reactions is described. The energy spectra of neutrons emitted by thick deuterium and helium targets at 0° angle irradiated by a beam of 15.8 MeV protons, 14.1 MeV and 17.1 MeV deuterons, respectively, were measured in an open geometry with stilbene and NE 213 scintillators and with a two-dimensional n-γ discrimination technique. Obtained spectral yields were compared with those of p+Be and d+Be reactions at corresponding energies. This comparison shows that the D- and ⁴He- targets spectra are substantially harder having lower relative contribution of low-energy neutrons. The p+D reaction looks to be the most effective reaction for producing fast neutrons on low energy cyclotrons.

Keywords:
neutron yields, break-up process, neutron generator

Paper ID: STP13629S
Committee/Subcommittee: E10.08
DOI: 10.1520/STP13629S
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