ABOUT RADIATION PERTURBATIONS IN RADIOACTIVE AND GAMMA-IRRADIATED CaSO4, SrSO4, BaSO4, SAMPLES,
Abstract
Electron paramagnetic resonance was used to study the transformations occurring in a crystal lattice of Alkali-earth sulfates under the influence of beta radiation from 35S introduced into these compounds. Also investigated were nonradioactive samples of the same salts irradiated with gamma rays from 60Ca. The tests consisted essentially of determining the accumulation of paramagnetic centers in the radioactive sulfates, determining the concentration of the paramagnetic centers as a function of the specific radioactivity, and measuring the annealing of the paramagnetic centers in the irradiated sulfates. The results show that the higher the level of the specific radioactivity of the salt, the more rapidly equilibrium is attained in the formation of the paramagnetic centers. The paramagnetic-center concentration increases with radioactivity but eventually attains saturation. It is concluded from the results that irradiation produces in the investigated salts localized unpaired electrons, which remain stable up to certain temperatures. The most stable EPR signal is found to be due to the radical SO3(-). The asymmetry of the observed EPR line is attributed to the radical SO4(-), which has a three-axis anisotropy of paramagnetic susceptibility.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 24, 1968
- Accession Number
- AD0680565
Entities
People
- L. G. Karaseva
- V. V. Gromov
Organizations
- National Air and Space Intelligence Center