Study of light transmittance from layers of Fricke-xylenol-orange-gel dosimeters

G. Gambarini, C. Birattari, M. Mariani, R. Marchesini, L. Pirola, P. Prestini, M. Sella, S. Tomatis

Research output: Contribution to journalArticlepeer-review


In-phantom absorbed dose is imaged by measuring the optical transmittance through ferrous-sulphate and xylenol-orange infused gel, in form of layers. Images are acquired with a CCD camera provided with a suitable optical filter. The dependence of dosimeter sensitivity and of linearity range on the amount of xylenol orange and on parameters of optical analysis has been inspected. In order to check the capability of the method, dose profiles in the central axis of a phantom irradiated with a collimated γ-beam have been compared with the results obtained with a ionisation chamber.

Original languageEnglish
Pages (from-to)321-324
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Publication statusPublished - Jan 2004


  • Dose imaging
  • Fricke gel
  • Gel dosimetry
  • Optical imaging
  • Phantoms

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces


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