Detection of helium-containing paramagnetic complex at decay of tritium incorporated in HTO and DTO

EPR technique was used to study the paramagnetic centers appearing during long-term storage of frozen (77 K) non-deoxygenated light (H2O) and heavy (D2O) water containing 3.5% vol. highly active HTO (29 ci/cm3), so that the resulting activity of the sample (0.1 ml) was about 100 mci. For comparison, the same samples containing no HTO but irradiated by Co-60 rays were studied under identical conditions. A schematic of the processes involved in tritium decay in DTO (or HTO) in the aqueous matrix frozen at low temperatures was suggested