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Radiation Biophysics: Dosimetry

Detecion of alpha-particle tracks using: a) an FNTD; b) CR39 track-etch detector

We can perform dosimetry for specialised irradiations and external facilities, traceable back to National Physical Laboratory standard. Dosimeter regularly used:

  • Ion cambers
  • Gafchromic films (room-light safe, self-developing radiation sensitive film) to determine the 2D variation in dose
         -  EBT3 (0.2 – 10 Gy)
         -  MD-V3 (1 – 100 Gy)
  • Thermoluminescence: TLD-100 and TLD-800
  • Alanine
  • Charged particle detection
      -  CR39 nuclear track detectors
      -  Fluorescent Nuclear Track Detectors (FNTD)
  • Spectrometry (gamma-rays and alpha-particles)
  • Automated Liquid Scintillation Counting 

 

 Selected Publications

  • Thompson et al (2019)Tracking down alpha-particles: the design, characterisation and testing of a shallow-angled alpha-particle irradiator. Radiat Prot Dosim 183, 264-269  [PMID: 30726978]
  • Cole et al (2018) High-resolution μCT of a mouse embryo using a compact laser-driven X-ray betatron source. Proc. Nat. Acad. Sci. 115, 635-640 [PMID: 29871946
  • Underwood et al (2015)Validation of a prototype DiodeAir for small field dosimetry.Phys Med Biol. 60, 2939-2953 [PMID: 25789823]
  • Fiorini et al (2014) Under-response correction for EBT3 films in the presence of proton spread out Bragg peaks. Physica Medica 30, 454-461  [PMID: 24461335]
  • Underwood et al (2013) Mass-density compensation can improve the performance of a range of different detectors under non-equilibrium conditions. Phys. Med. Biol. 58, 8295-8310 [PMID: 24216601]
  • Underwood et al (2013) Detector density and small field dosimetry: Integral versus point dose measurement schemes. Med. Phys.40, 082101-1 - 082101-16 [PMID: 23927339]