Search of x-ray solar activity correlations with 55Fe, 60Co nucleus decay rates

Abstract

Several experimental groups observed temporary modulations of some nuclei strong and weak decay constants, which are of the order of 10³ and with periods of one year, solar day, i.e. 24 hours and some others. In our experiments the decay rates were measured for 55Fe e-capture and 60Co β-decay during 2012-2020. Altogether, six decay rate dips of the order 10² 10³ and with duration from 40 to 208 hours were found, they deviate essentially from exponential decay rate fit