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 spectrometry consisting of a Polyethylene sphere with variable diameter and BF3 detector using point and disk neutron sources 241Am-Be.

The reaction rate and the response matrix of disk neutron source shows higher values than those obtained for point neutron source.

In addition, the response with disk neutron source at the energy range from 4.14x10-7 MeV to 11.09 MeV shows a maximum value for sphere of 10 inch diameter, where the response with point neutron source stile increasing in this condition .The results obtained in this work for the disk neutron source agreed well with published results.