Theγ-irradiation stability of polycrystalline glycine (Gly) has been studied by 13C CPMAS
ESR and X-ray diffraction. The 13C chemical shifts and X-ray diffraction data show no change up to 140 kGy dose. Which shows that Gly is stable at this desage. However
the linewidth of I3C resonances increases linearly with the irradiation dose.