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

S. A. Bogachev, A. G. Kharlamov, I. A. Kishin, A. S. Kubankin, S. N. Mayburov, V. I. Tsekhosh

Research output: Contribution to journalConference articlepeer-review


Several experimental groups observed temporary modulations of some nuclei strong and weak decay constants, which are of the order of 10-3 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 10-2-10-3 and with duration from 40 to 208 hours were found, they deviate essentially from exponential decay rate fit. It is shown that their occurrence correlate with x-ray solar flares with significant reliability. Besides, two long term deviations of 55Fe decay rate of 62 and 41 days were observed in 2017-2018, it's argued that they are related to the change of 11 year solar cycle stages.

Original languageEnglish
Article number012028
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 16 Dec 2020
Event5th International Conference on Particle Physics and Astrophysics, ICPPA 2020 - Moscow, Virtual, Russian Federation
Duration: 5 Oct 20209 Oct 2020


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