Abstract
Electron spin relaxation behaviours of radiation induced radicals were studied by the continous microwave saturation method of electron spin resonance (ESR) spectra. Radiation induced radicals in nutmeg yielded a sharp and intense ESR signal at g = 2.0. By the progressive saturation procedure, we could evaluate relaxation times (T1 and T2). The computer program to analyze the ESR line shape using all data points on a saturation curve was applied. Based on the theoretical analysis, the relaxation behaviors of radiacals were revealed. Radiation induced radicals of the specimens yielded relaxation times, T1 in the μsec and T2 in nsec ranges, respectively. Upon the irradiation, T1 shortened, and T2 lengthened. The progressive saturation curve was changed by the irradiation.
