Results of a search for daily and annual variations of the 214Po half-life at the two year observation period
Abstract
The brief description of installation TAU-2 intended for long-term monitoring of the half-life value τ( T 1/2) of the 214Po is presented. The methods of measurement and processing of collected data are reported. The results of analysis of time series values of τ with different time step are presented. Total measurement time was equal to 590 days. Averaged value of the 214Po half-life was obtained τ = 163.46 ± 0.04 μs. The annual variation with an amplitude A = (8.9 ± 2.3) × 10-4, solar-daily variation with an amplitude A So = (7.5 ± 1.2) × 10-4, lunar-daily variation with an amplitude A L = (6.9 ± 2.0) × 10-4 sidereal-daily variation with an amplitude A S = (7.2 ± 1.2) × 10-4 were found in a series of τ values. The maximal values of amplitude are observed at the moments when the projections of the installation Earth location velocity vectors toward the source of possible variation achieve its maximal magnitudes.
- Publication:
-
Physics of Particles and Nuclei
- Pub Date:
- November 2016
- DOI:
- 10.1134/S1063779616060034
- arXiv:
- arXiv:1505.01752
- Bibcode:
- 2016PPN....47..986A
- Keywords:
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- Nuclear Experiment;
- Astrophysics - Solar and Stellar Astrophysics;
- Physics - Instrumentation and Detectors
- E-Print:
- Talk at The International Workshop on Prospects of Particle Physics: "Neutrino Physics and Astrophysics" February 1 - Ferbuary 8, 2015, Valday,Russia, 7 pages, 12 figure (to be published in PEPAN)