Full-absorption scintillation spectrometer for neutrons

A full-absorption scintillation spectrometer for neutrons (volume of scintillator = 24 l) has been developed and employed in investigations of muon catalysed processes. Its application allows: (a) Considerably increasing the rate of accummulation of events; (b) efficiently using muon catalysis multiplicity for fuller and more reliable determination of its parameters; (c) significantly reducing uncertainty in the calculated and experimentally found values of neutron detection efficiency. The device combines good spectrometric properties for neutron energies En = 1-6 MeV and reliable n-γ separation (the degree of separation for a Pu-Be source < or approx. 103 starting from an electron energy of 50 keV). (orig.)