Search for 2K(2ν)-capture of Xe-124

Abstract

The results of a search for two neutrino mode of double K-capture of Xe-124 using a large copper low-background proportional counter are presented. Data collected during 3220 hours of measurements with 58.6 g of ${}^{124}$Xe provides us to a new limit on the half-life of Xe-124 regarding 2K-capture at the level: T_{1/2} >= 2.0*10^{21} years at a 90\% confidence level.

9 pages, 4 figures, Talk at The International Workshop on Prospects of Particle Physics: "Neutrino Physics and Astrophysics" February 01 - Ferbuary 08, 2015, Valday, Russia