To provide a tritium sampler capable of reducing the error of evaluation for radiation of tritium and also improving workability.
The tritium sampler for collecting the tritium at the measurement of radiation concentration of the tritium in the gaseous waste comprises: the mean water vapor concentration measurement means 4, 5, 14, for prescribed period in the sampling interval of sampling air by sampling the air containing the tritium; the mean water vapor concentration calculation means 14 for calculating the water vapor concentration for each prescribed period during the sampling interval; the mean water vapor concentration memory means 14a; the mean water vapor concentration memory and display means 15, 16: and the tritium collection means 6-9 for collecting the tritium in the phase of water by compressing the sample air during the sampling interval and cooling it so as to condense the tritium containing water vapor into the form of water.
COPYRIGHT: (C)2005,JPO&NCIPI
Mizushima Naodai
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Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order