Double electron capture searches in 74Se. (28th June 2016)

• Record Type: Journal Article
• Authors: Lehnert, B; Wester, T; Degering, D; Sommer, D; Wagner, L; Zuber, K
• Is Part Of: Journal of physics. Volume 43:Number 8(2016:Aug.)
• Publication Date: 2016-06-28
• Subjects: double beta decay -- electron capture -- low background; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/0954-3899/43/8/085201
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: A search for various double electron capture modes of 74 Se has been performed using an ultralow background Ge-detector in the Felsenkeller laboratory, Germany. Especially for the potentially resonant transition into the 1204.2 keV excited state of 74 Ge a lower half-life limit of 0.70 × 10 19 yr (90% credibility) has been obtained. Serious concerns are raised about the validity of obtained 74 Se limits in some recent publications.