METHOD FOR MEASUREMENT OF DEPOSITION AMOUNT AND DEPOSITION RATE OF TRITIUM GAS IN ENVIRONMENT

摘要

PROBLEM TO BE SOLVED: To provide a method in which the deposition amount and the deposition rate of HT can be measured and evaluated even in any environment without using a tritium source. SOLUTION: Air which passes through a ventilation chamber is sampled by using a tritium sampler from the inflow port and the outflow port of the ventilation chamber which is installed in soil. The concentration of the HT in the sampled air is measured by using a liquid scintillation counter. On the basis of the measured concentration of the HT, the deposition amount and the deposition rate onto the soil of the HT are evaluated.