Abstract
Both 100 and 116Cd are zero-neutrino double-ß-decay candidates with J π = 0+ and the ground states of the respective intermediate nuclei, 100Tc and 116In, have J π = 1+. This makes it possible to measure these matrix elements, which turn out to provide a valuable benchmark for testing models. The electron-capture (EC) decay of 100Tc can also be used to directly determine the efficiency of a potential neutrino detector. However, the experimental determinations of the EC decay branches of interest are challenging because they are only small fractions of the main decays and co-produced radioactivities contribute significant background counts in the regions of interest. This article summarizes our work at Jyväskylä, where we have taken advantage of the high-purity beams produced at IGISOL in combination with JYFLTRAP to achieve significant improvements in the determinations of the EC branches of 100Tc and 116In.
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García, A. et al. (2012). Decay studies for neutrino physics. In: Äystö, J., Eronen, T., Jokinen, A., Kankainen, A., Moore, I.D., Penttilä, H. (eds) Three decades of research using IGISOL technique at the University of Jyväskylä. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5555-0_20
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DOI: https://doi.org/10.1007/978-94-007-5555-0_20
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