Spectral Changes Observed in Irradiated Glycine

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Abstract
The electron spin resonance spectra from irradiated glycine have been investigated as a function of dose and time. Single crystals were examined at various orientations, with the most significant changes occurring in the (0, 0, 1) direction. The portion of each spectrun attributed to the radical NH+3 C H COO- appeared unchanged, but that due to[center dot] CH2COO- showed considerable alteration. These changes occurred comparatively slowly at low doses, but were enhanced due to heating effects above 100 megarads. Two competing mechanisms are postulated to account for the results.