TAU-4 installation intended for long-term monitoring of a half-life value of the $^{212}$Po

• DOI: 10.48550/arxiv.1812.04849
• Publication Date: 2018-01-01
• Authors: E. N. Alexeev; Yu. M. Gavrilyuk; A. M. Gangapshev; A. M. Gezhaev; V. V. Kazalov; V. V. Kuzminov; S. I. Panasenko; O D Petrenko; S. S. Ratkevich
• Keywords: Value (mathematics); Data set

Description of the TAU-4 installation intended for long-term monitoring half-life value $T_{1/2}$ $^{212}$Po is presented. Natural thorium used as a source mother's chain. The methods measurement and data processing are described. comparative results short test measurements carried out in ground (680 h) underground (564 laboratories given. Averaged =$294.09\pm 0.07$ ns has been found level set similar one set. solar-daily variations with amplitudes $A_{So}=(11.7\pm 5.2)\times10^{-4}$ $A_{So}=(7.5\pm 4.1)\times10^{-4}$ were series $τ$ values.