Dosimetric evaluation of sodium carbonate (Na₂CO₃) by electronic paramagnetic resonance

Abstract

This work presents the possibility to use the electron paramagnetic resonance (EPR) signal of gamma-irradiated sodium carbonate for dosimetric purposes. The dosimeters were irradiated in a ⁶⁰Co source. The process induced in sodium carbonate by gamma rays results in the formation of carboxil radical anions . This way, the method is based on the evaluation of the EPR signal of these radical anions in the material. The aspects studied were peak-to-peak signal amplitude as a function of received dose, signal fading, signal repeatability, sample homogeneity, zero response and environmental effects. It has been concluded that sodium carbonate can be used as a sensitive material to gamma radiation.

^†Paper presented as a contribution to the 10th International Symposium on Solid State Dosimetry, Mexico City (24–28 September, 2007).

Keywords:

• sodium carbonate
• gamma-radiation
• EPR
• dosimetry

Notes

^†Paper presented as a contribution to the 10th International Symposium on Solid State Dosimetry, Mexico City (24–28 September, 2007).