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Investigation of Kinetic and Dosimetric Features of Citric Acid Using ESR Spectroscopy

机译：利用ESR光谱研究柠檬酸的动力学和剂量学特征

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摘要

In the present work, dosimetric potential and temperature-dependent behaviors of the radicals produced upon γ-irradiation of anhydrous and monohydrate citric acid were explored through a detail electron spin resonance (ESR) study. While unirradiated samples presented no ESR signal, irradiated samples were observed to exhibit an ESR spectrum consisting of many intense and weak resonance lines spread over a magnetic field range about 13 mT and centered at g = 2.0032. Although, the radicals produced upon γ-irradiation have the same structures, the ESR spectra of both compounds of citric acid were observed to be different. An evaluation technique based on the variations of the characteristic resonance lines and the spectrum area was adopted to assign the radical species responsible for the observed experimental ESR spectrum and to determine their kinetic and dosimetric features.
机译：在目前的工作中，通过详细的电子自旋共振（ESR）研究探索了无水和一水合柠檬酸γ辐照产生的自由基的剂量势和温度依赖性行为。虽然未辐照的样品未显示任何ESR信号，但观察到辐照的样品显示出由许多强共振线和弱共振线组成的ESR光谱，这些共振线分布在大约13 mT的磁场范围内，并以g = 2.0032为中心。尽管在γ辐照下产生的自由基具有相同的结构，但观察到两种柠檬酸化合物的ESR谱均不同。采用基于特征共振线和光谱区域变化的评估技术来分配负责观察到的实验ESR光谱的自由基种类，并确定其动力学和剂量学特征。

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