Exposing radiochromic film with strontium-90 beta particles
Channel: Carl Willis
Date: 2023-04-02

Sheets of Gafchromic EBT3 radiochromic film are exposed to radiation from a strontium-90 pterygium eye applicator, causing the dye in the film to polymerize into its characteristic blue form.  The influence of a magnetic field is investigated.  In total, three sheets are irradiated for one hour each:
1) with no magnet present;
2) with the magnet in one orientation;
3) with the magnet in the reverse orientation.