Feasibility of EBT Gafchromic films for comparison exercises among standard beta radiation fields

The feasibility of using radiochromic films to verify the metrological coherence among standard beta radiation fields was evaluated. Exercises were done between two Brazilian metrology laboratories in beta fields from 90Sr/90Y, 85Kr and 147Pm radiation sources. Results showed that the radiochromic film was useful for field mapping aiming uniformity and alignment verification and it was not reliable for absorbed dose measurements only for 147Pm beta field.

► The feasibility of using radiochromic films in beta radiation fields was evaluated.
► Exercises were done between two Brazilian metrology laboratories in beta fields.
► Results showed that the radiochromic film was useful for 90Sr/90Y and 85Kr mapping.