Investigation of the dosimetric properties of potassium hydrogen tartrate using EPR

• Published in: Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2023-09, Vol.210, p.111026, Article 111026
• Main Authors: Maghraby, Ahmed Mohamed, Soltan Monem, Ahmed, Eissa, Hoda Mohamed
• Format: Article
• Language: English
• Subjects: EPR; ESR; Organic dosimeter; Potassium hydrogen tartrate; Radiation dosimetry
• ISSN: 0969-806X
• DOI: 10.1016/j.radphyschem.2023.111026

Use of electron paramagnetic resonance (EPR) in radiation dosimetry means more accurate and reliable evaluation of radiation doses. The search for new dosimeter material is continuing to overcome some drawbacks of available ones. In current work potassium hydrogen tartrate is presented as a new EPR dosimeter material where its radiation dose dependency, effects of the change in microwave power and modulation amplitude on the peak-to-peak intensity were studied. Response of potassium hydrogen tartrate to gamma radiation was studied in two ranges: the first starts at 1.4 Gy and ends at 84.2 Gy, and the second from 42.1 Gy to 2415.6 Gy. Calibration curves were obtained with associated combined uncertainties range from 0.5% and up to 27.4% for the first peak and from 0.5% up to 10.2%, for the second peak. Calibration curves were plotted and compared to alanine. Time dependence of the EPR spectra of the radiation-induced radicals was monitored over short term (10 h) and long-term (28 days) following irradiation. •Potassium hydrogen tartrate is sensitive to radiation.•Time-dependence of the radiation-induced radicals shows predictable behavior and stabilities.•Uncertainties showed the ability to measure doses down to 1.4 Gy and up to 2.4 kGy.