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arXiv · 0711.2637

Comparative analysis of spectra of the background of the proportional counter filled with Kr, enriched in Kr-78, and with Kr of natural content

Yu. M. Gavriljuk·V. N. Gavrin·A. M. Gangapshev·V. V. Kazalov·V. V. Kuzminov·S. I. Panasenko·S. S. Ratkevich
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Abstract

The results of the experiment searching for 2K-capture with large low-background proportional counter are presented. The comparison of spectra of the background of the proportional counter filled with Kr enriched in $^{78}$Kr (8400 hr) and with natural Kr (3039 hr) is given. A new limit on the half-life of $^{78}$Kr with regard to 2K-capture, T$_{1/2}\geq2.0\cdot10^{21}$ yrs (95% C.L.) has been obtained.

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Yu. M. Gavriljuk, V. N. Gavrin, A. M. Gangapshev, V. V. Kazalov, V. V. Kuzminov, S. I. Panasenko, S. S. Ratkevich. 2007-11-16. Comparative analysis of spectra of the background of the proportional counter filled with Kr, enriched in Kr-78, and with Kr of natural content. https://arxiv.org/abs/0711.2637

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