Dosimetry of tritium in the atmosphere. Use of the CD.2 type differential ionization chamber

After having indicated some characteristics data regarding tritium β^- radiation (energy, period, distance travelled by particles), admissible levels in terms of exposure, outlined the difficulty to detect low tritium concentrations, and indicated some characteristics of the ionization chamber and its equipment used to perform this detection, the author reports the study of the operation of the CD.2 differential ionization chamber in static regime (experimental installation, evidence of wall absorption and desorption, calibration) and in dynamic regime (experimental installation, response delay, calibration)