The use of the reaction 9Be(α, γn)12C to determine the energy scale and the efficiency at low energies of stellar collapse neutrino detectors

Details The use of the reaction 9Be(α, γn)12C to determine the energy scale and the efficiency at low energies of stellar collapse neutrino detectors The use of the reaction 9Be(α, γn)12C to determine the energy scale and the efficiency at low energies of stellar collapse neutrino detectors

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991nimpa.305..475b&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 305, Issue 2, p. 475-483.

Physics

5

Scientific paper

Experiments for the detection of gravitational stellar collapse νe-events are most frequently based on the reaction: νe +p --> n + e+, followed by delayed neutron capture in hydrogen n + p --> γ + d, Eγ = 2.2 MeV.
Data obtained by a low intensity Am/Be source (as n and γ-ray emitter), in association with MACRO scintillation counters, are being used to determine the capability of detecting delayed neutron capture from cascade n, γ-ray emissions. The 9Be(α, γn)12C reaction is a valuable tool for setting the optimum ``stellar gravitational collapse trigger'' working conditions both for the detection of the primary νe-events and for the detection of the delayed neutron captures. The use of the Am/Be source allowed several experimental checks of Monte Carlo calculated detection efficiencies.

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