Yn. Pepyolyshev et al., THE DYNAMIC METHOD FOR TIME-OF-FLIGHT MEASUREMENT OF THERMAL-NEUTRON SPECTRA FROM PULSED SOURCES, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 364(3), 1995, pp. 501-506
A time-of-flight method for measurement of thermal neutron spectra in
pulsed neutron sources with an efficiency more than 10(5) times higher
than the standard method is described. The main problems associated w
ith the electric current technique for time-of-flight spectra measurem
ent are examined. The methodical errors, problems of special neutron d
etector design and other questions are discussed. Some experimental re
sults for spectra from the surfaces of water and solid methane moderat
ors obtained at the IBR-2 pulsed reactor (Dubna, Russia) are presented
.