In order to complete the simulation work of PGNAA, I simulated the (n,γ) reaction of neutrons and Ti, and the resulting γ spectrum. Unfortunately, fluka’s simulated results don’t match the real ones. The simulation results of mcnp can be consistent with the real results.
Clearly, there are a lot of peaks here that shouldn’t be there. At 1381.7(5.18b), 6418.4(1.96b) and 6760.1(2.97b)keV, the intensity ratio of the peaks was also wrong.
I really don’t understand why the gamma spectrum calculated by fluka is wrong when both MCNP and fluka use the ENDF database?
Ti.flair (7.7 KB)
PGNAA cross section.pdf (20.2 KB)