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

2007/11/16 by Yu. M. Gavriljuk, V. N. Gavrin, В. Н. Гаврин +12
Chemistry · Engineering · Physics and Astronomy · #Calibration and Measurement Techniques #Chemical Thermodynamics and Molecular Structure #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Radioactive Decay and Measurement Techniques #nucl-ex

paper · pdf · doi:10.48550/arxiv.0711.2637

4 pages, 7 postscript figures, talk at the XIV-th Int. School "Particles and Cosmology"

arxiv created 2007/11/16 · openalex publication_date 2007/11/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 ⁷⁸Kr (8400 hr) and with natural Kr (3039 hr) is given. A new limit on the half-life of ⁷⁸Kr with regard to 2K-capture, T_1/2≥2.0⋅10²¹ yrs (95% C.L.) has been obtained.

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