Study on the method with associated particle for measuring the neutron yield of D–D neutron generator†

Monte Carlo simulations of elemental imaging using the neutron‐associated particle technique

“…While high DD neutron fluxes are sought after in APNEI applications for short count times and statistical strength, the limitation of beam spot diameter to maximize projective resolution would restrict neutron flux as well as present target cooling challenges. These complications are in addition to competing reactions at the deuterium‐loaded target, which yield protons and tritium ions, thus further confounding the trigger processes by which the pixelated associated particle detector may be stimulated . Additionally, large volume HPGe detectors have traditionally been known to encounter pulse pile‐up issues at count rates on the order of 10 kcps …”

“…These complications are in addition to competing reactions at the deuterium-loaded target, which yield protons and tritium ions, thus further confounding the trigger processes by which the pixelated associated particle detector may be stimulated. 36,37 Additionally, large volume HPGe detectors have traditionally been known to encounter pulse pile-up issues at count rates on the order of 10 kcps. 25 FIG .…”

Development of a compact D-D neutron generator

“…In order to reduce the effect of gamma-rays, EJ-410 disc and PMT are mounted in a cylindrical lead shield which is a sandwich structure with 3 mm lead in the middle and 2 mm stainless steel in the inner and outer layers (seen figure 6). The fast neutron detector system with the lead shield is calibrated by the associated particle method [19] at a DD neutron generator. The detection efficiency of the detector system under an appropriate threshold is about 1.71% for DD neutron with an energy of 2.5 MeV.…”