Influence of water concentrations to chemical forms of tritium generated in mercury through a nuclear reaction

In order to assess internal doses from tritium at the JSNS (Japan Spallation Neutron Source), a correlation between the chemical forms of tritium generated in mercury and the amount of water in it was studied by simulating the generation of tritium in the mercury target used for a neutron source. The ratio of [3H]H2O to all of generated tritium increased with increase in the water concentration. An empirical equation to predict the content of [3H]H2O from the water concentration is proposed.