A preliminary investigation of the EBT2 radiochromic films response to low energy fast neutrons

EBT2 radiochromic films were used to study the relative dose distribution of the neutron field. The correlation between the beam current and the optical density showed good linear dependence with a correlation coefficient exceeding 98%. At any given beam energy, neutron dose rates can be changed by a factor of 40 without changing the neutron spectrum. This result is consistent with what was found by the Tissue Equivalent Proportional Counter measurements. The uniformity of the neutron field was inspected by the optical density profile of the exposed film. - Highlights: ► Developing a 2D image for neutron field. ► Investigation of EBT2 sensitivity to neutrons. ► Studying the effect of irradiation parameters (beam energy and beam current) to the measured optical density.