Proton therapy dosimetry using the scintillation of the silica fibers

Arash Darafsheh, Reza Taleei, Alireza Kassaee, Jarod C. Finlay

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

We investigate the feasibility of proton therapy dose measurement by using scintillation of a bare silica glass fiber. The emission spectra of the optical fiber at various depths in tissue-mimicking phantoms, irradiated with proton beams of energies 100-225 MeV show two distinct peaks at 460 and 650 nm whose nature is connected with the silica point defects. Our experimental results and Monte Carlo simulation showed that the Čerenkov radiation cannot be responsible for such a phenomenon. We showed that the intensity of the peak at 650 nm correlates with the proton dose with a minimal effect of ionization quenching, while the intensity peak at 460 nm under-reports the radiation dose.

Original languageEnglish
Pages (from-to)847-850
Number of pages4
JournalOptics Letters
Volume42
Issue number4
DOIs
StatePublished - Feb 15 2017

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