GEIGER GAS COUNTING METHODS OF ASSAYING TRITIATED HYDROGEN AND TRITIATED WATER

摘要

Methods are described of assaying tritium in hydrogen, water vapour, butane and acetylene as part of the filling of a self-quenching geiger counter and it is concluded that the most satisfactory filling is tritiated hydrogen with toluene as a quenching vapour. Absolute measurements on tritiated water are carried out by reducing the water over zinc at 425°C and introducing the hydrogen into a counter with a known sensitive volume.