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Results of a search for daily and annual variations of the 214Po half-life at the two year observation period
- Source :
- Physics of Particles and Nuclei. 47:986-994
- Publication Year :
- 2016
- Publisher :
- Pleiades Publishing Ltd, 2016.
-
Abstract
- The brief description of installation TAU-2 intended for long-term monitoring of the half-life value $\tau$ ($\tau_{1/2}$) of the $^{214}$Po is presented. The methods of measurement and processing of collected data are reported. The results of analysis of time series values $\tau$ with different time step are presented. Total of measurement time was equal to 590 days. Averaged value of the $^{214}$Po half-life was obtained $\tau=163.46\pm0.04$ $\mu$s. The annual variation with an amplitude $A=(8.9\pm2.3)\cdot10^{-4}$, solar-daily variation with an amplitude $A_{So}=(7.5\pm1.2)\cdot10^{-4}$, lunar-daily variation with an amplitude $A_L=(6.9\pm2.0)\cdot10^{-4}$ and sidereal-daily variation with an amplitude $A_S=(7.2\pm1.2)\cdot10^{-4}$ were found in a series of $\tau$ 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.<br />Comment: 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)
- Subjects :
- Physics
Nuclear and High Energy Physics
Physics - Instrumentation and Detectors
010308 nuclear & particles physics
Observation period
FOS: Physical sciences
Total measurement
Half-life
Instrumentation and Detectors (physics.ins-det)
Time step
Geodesy
01 natural sciences
Amplitude
Astrophysics - Solar and Stellar Astrophysics
0103 physical sciences
Annual variation
Nuclear Experiment (nucl-ex)
Variation (astronomy)
Nuclear Experiment
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
Subjects
Details
- ISSN :
- 15318559 and 10637796
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Physics of Particles and Nuclei
- Accession number :
- edsair.doi.dedup.....3b0a1938fce9e8a168f42abbaeabe8a6