A Monte-Carlo technique for the reconstruction of time dependent spectra of short-pulse neutron sources

摘要: Abstract A method is presented which yields time-resolved energy spectra of neutrons emitted in intense bursts by an extension time flight spectroscopy. The experiment consists recording the signals a number detectors placed at various optimized distances from source. evaluation based on new Monte-Carlo reconstruction also powerful tool designing and optimizing experiment. Extensive numerical tests simulate application for determining spectrum fusion plasma focus generator (pulse duration 20–500 ns, domain centered 2.5 MeV widths 100–1000 keV) are presented. Time resolution better than 10 ns about 50 keV possible. It shown that case dense Z-pinch experiments characterized shorter emission times (20–40 ns) still works bases not longer few meters. to experimental data set collected high voltage SPEED 2, operated 180 kV bank voltage, 1.5 MA pinch current 65 kJ capacitor energy, illustrated.