identification of the components of the atmospheric radioactivity through chemical and radiometric methods; LES MESURES DE LA RADIOACTIVITE ATMOSPHERIQUE PAR LES METHODES CHIMIQUES ET RADIOMETRIQUES

The methods used for the measurement of the radioactivity of rain and fall-out are described. An outline is given of the method used for chemical separation and radiometric determination of Sr/sup 90/ in fall-out and rain. (J.S.R.)