DOSIMETRY OF TRITIUM IN THE ATMOSPHERE

An apparatus for the batch measurement of atmospheric H/sup 3/ was designed and constructed. It consists essentially of two cylindrical chambers placed in parallel. The measurement chamber is coated with Hostaflon as insulator. The difference in the ionization currents of the two chambers is measured with a vibrating condenser electrometer. The calibration curve of the device is shown. The humidity and the radioactive component of the air appear to have no effect on the measurements. The modification of the device for continuous measurement is described, and the operation and calibration of the continuous measurement apparatus is discussed. (J.S.R.)