An Approach for Using of Poly Glycolic Acid (PGA) in Reference Standard Dosimetry: PGA/ESR Dosimetry System Response Curve and Post Irradiation Stability

Arbi Mejri, Haikel Jelassi, Khaled Farah, Ahmad Hichem Hamzaoui, Hichem Eleuch

Departments of Physics and Astronomy, Institute for Quantum Science and Engineering, Texas A & M University, College Station, Texas, USA.
Ionizing Radiation Dosimetry Laboratory, National Center for Nuclear Sciences and Technologies,Tunis, Tunisia.
National Institute of Scientific and Technical Research, Tunisia.
Research Unit: Control and Development of Nuclear Technology for Peaceful Uses, National Center for Nuclear Sciences and Technologies, Tunis, Tunisia.

DOI: 10.4236/wjnst.2012.23012                

Abstract

Reference Standard Dosimeters are used to calibrate radiation environments and routine dosimeters. It can also be used in routine dosimetry applications for radiation processing where higher quality dosimetry measurements are required. Electron Spin Resonance (ESR) is a well-established Reference Standard Dosimetry system in industrial applications of ionising radiation, and its use is also proposed in radiation therapy and accident dosimetry. In the present experimental work, PGA solid state dosimeter (SSD) has been investigated using ESR spectroscopy to study the gamma radiation response of this material and to evaluate its dosimetric characteristics: dose response, room temperature fading, heat treatment effect during post-irradiation storage. Results obtained up to now confirm that PGA seems to be suitable material for ESR dosimetry applications.

Keywords

Dosimetry; Solid State Dosimeter (SSD); Poly Glycolic Acid (PGA); Electron Spin Resonance (ESR); Reference Standard Dosimetery; Post-Irradiation Thermal Treatments; Fading Behaviour

Conflicts of Interest

The authors declare no conflicts of interest.

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