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EBT2 films response to alpha radiation at 48.3 MeV
C Le Deroff1, M Cherel2, A Guertin3
1GIP ARRONAX, Saint-Herblain, France.
Radiation Protection Dosimetry
|May 15, 2014
Summary
This study characterizes the dose response of Gafchromic EBT2 films for alpha particles and photons. Alpha particle irradiation revealed a polymerisation saturation effect not observed with X-rays.
Area of Science:
- Radiobiology
- Medical Physics
- Radiation Detection
Background:
- Development of radiobiological experimental setups is crucial for advancing radiation therapy research.
- Gafchromic EBT2 films are widely used for radiation dosimetry due to their real-time readout capabilities.
Purpose of the Study:
- To establish the dose response of Gafchromic EBT2 films for alpha particles at 48.3 MeV.
- To compare the dose response of EBT2 films for alpha particles versus 6-MV X rays.
Main Methods:
- Irradiation of EBT2 films with alpha particles from the Arronax cyclotron.
- Development of a beam monitoring system using copper foil and X-ray spectrometer for dose calculation.
- Irradiation of EBT2 films with 6-MV X rays for comparative analysis.
Main Results:
- The dose response curve for alpha particles exhibited polymerisation saturation.
- This saturation effect was distinct from the dose response observed with photons.
Conclusions:
- Gafchromic EBT2 films demonstrate a different dose response behavior for alpha particles compared to X-rays.
- The findings are essential for accurate dosimetry in alpha particle radiobiology experiments.
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