Superposition detection method with neutron beam on time-of-flight in backscattering geometry

Effective technique for investigation into crystal structures by measurement and subsequent analysis of slow neutron scattering angular distribution with focusing of intensity of a neutron beam diffracted from crystal structure is suggested. Neutron selection according to energies is performed using time-of-flight method in the backscattering geometry. A system for elastically scattered neutron detection comprising a large number of proportional chambers or helium counters located at different distances from a sample within the backscattering angle interval is presented. Neutron burst duration providing for resolution value sufficient for structural analysis should not exceed 10 mus. 3 refs.; 1 fig