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  • Title: Analyses of the EPR responses of sucrose and L-alpha-alanine radicals induced by C, Ne, and Ar ion irradiations.
    Author: Nakagawa K, Sato Y.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2006 Mar 13; 63(4):851-4. PubMed ID: 16490388.
    Abstract:
    Using electron paramagnetic resonance (EPR), we investigated the signal responses of sucrose and L-alpha-alanine radicals produced by heavy-ion irradiation with various linear energy transfers (LETs) and absorbed dose. The spin yields for the two compounds showed a linear relation with the absorbed dose, as well as a logarithmic correlation with the LET. A quantitative EPR analysis showed that sucrose was more sensitive to the particle species than that of alanine. Hence, the present EPR results imply that sucrose can be useful as a radiation indicator. Further analysis was carried out for the radical-production cross section, which showed that stable radicals of the two compounds were produced through collisions of several particles with a single molecule.
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