HELIO-GEOPHYSICAL EFFECTS ON THE RESULTS OF RADIOACTIVITY MEASUREMENTS BY LIQUID SCINTILLATION-COUNTING AND THE STATISTICS OF RADIOACTIVE DECAY

The results of continuous measurements of tritium standards by liquid scintillation counting are presented. During the period of low solar a ctivity (September 1985 - June 1986) we have carried out 11 series of measurements with present counting time of 1 minute and the duration o f 1 to 5 days. Within the limits of every separate series some specifi c quasi-periodic variations have been discovered both for mean countin g rates, scattering of the data and the shape of frequency histograms. The scattering of results was found to be mostly pronounced at low le vels of geomagnetic activity.