Search for Variations of 213Ро Half-Life

Autor: V. V. Kuzminov, A. M. Gangapshev, S. S. Ratkevich, Yu. M. Gavrilyuk, V. V. Kazalov, E. N. Alexeev, S. I. Panasenko, A. M. Gezhaev
Rok vydání: 2018
Předmět:
Zdroj: Physics of Particles and Nuclei. 49:557-562
ISSN: 1531-8559
1063-7796
DOI: 10.1134/s1063779618040044
Popis: A device with the parent 229Th source was constructed to search for variations of the daughter 213Po half-life (T1/2 = 4.2 μs). A solar-daily variation with amplitude ASo = (5.3 ± 1.1) × 10–4, a lunar-daily variation with amplitude AL = (4.8 ± 2.1) × 10–4, and a sidereal-daily variation with amplitude AS = (4.2 ± 1.7) × 10–4 were found upon proceeding the data series over a 622-day interval (from July 2015 to March 2017). The 213Po half-life mean value is found to be T1/2 = 3.705 ± 0.001 μs. The reference value is corrected by 12%.
Databáze: OpenAIRE
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