حساب معدل التفاعل و مصفوفة الاستجابة الطاقية لمطيافية نترونية مكونة من كرة من البولي إثلين متغيرة القطر و الكاشف BF3 باستعمال الكود MCNP5-beta

Abstract EN

The MCNP5-beta code was used to calculate the reaction rate 10B(n, α) 7Li and the neutron energy response matrix of a neutron spectrometer consisting of a water sphere with variable diameter and detector BF3 using point and disk neutron sources 241Am-Be.

The reaction rate and the response matrix of disk neutron source shows higher value than these obtained from the point neutron source.

The response of the matrix disk neutron source in the energy range from 4.14x10-7 to 11.09 MeV show a maximum value for sphere of 12 inch diameter, where the response with point neutron source stile increasing calculated value in this condition .The calculated values of neutron energy responses for a disk neutron source agreed well with published results.