Fig. 5: Example data of ΔOD when irradiated with proton and photon beams as a function of time.
From: Evaluation of radiochromic formulations for dosimetry in high-energy photon and proton beams

Change in OD vs time for a single, representative sample of 635LiCPDA, 674LiPCDA and PCDA when exposed to a 10 MV photon (solid line) and a 74 MeV proton (dashed lined) beams. Dose rates for the 635LiPCDA photon and proton exposure were 12 Gy min−1, whereas the dose rates for the 674LiPCDA and PCDA were 20 Gy min−1.