Physics Bucharest 2017

Film types

RadioGraphic

RadioChromic

- radiation + developer: AgBr crystals that received dose are converted into Ag-grains - AgBr: large over-response for low energy photons ( photo-electric effect )  huge over-response in large fields and at large depths - sensitive to light (sealing)

- radiation: transparant monomers  opaque polymers - “Dry” film, “self developing” - monomers close to water equivalent  little energy dependence in megavolt beams - applicable in “daylight” - applicable in water

Examples: Kodak XV-2, EDR

Examples: EBT-XD, EBT3, EBT2, EBT, HS, MD55