Conveners
Neutrino #5
- Itaru Shimizu (Tohoku University)
Mr
Christian Wittweg
(WWU Münster)
9/9/19, 4:10 PM
Neutrinos
Oral presentation in parallel session
Two-neutrino double electron capture ($2\nu$ECEC) is a second-order Weak process with predicted half-lives that surpass the age of the Universe by many orders of magnitude. Indications for $2\nu$ECEC decays have only been seen for two isotopes, $^{78}$Kr and $^{130}$Ba, and instruments with very low background levels are needed to detect them directly with high statistical significance. The...
Ian Guinn
(University of North Carolina at Chapel Hill)
9/9/19, 4:30 PM
Neutrinos
Oral presentation in parallel session
The \textsc{Majorana Demonstrator} is studying double-beta decay in $^{76}$Ge using a modular array of high purity Germanium detectors. The experiment is constructed using low-background materials and is currently operating at the '4850 level of the Sanford Underground Research Facility. The experiment consists of two modules with 29~detectors each, consisting of 44.8~kg of germanium...
Dr
Alexander Barabash
(NIC «Kurchatov Institute» - ITEP, B. Cheremushkinskaya 25, 117218 Moscow, Russia)
9/9/19, 4:50 PM
Neutrinos
Oral presentation in parallel session
Triple beta decay of 150Nd to the ground and excited states of 150Eu and quadruple beta decay of 150Nd to the excited states of 150Gd have been studied using a 400 cm3 low-background HPGe detector and an external source consisting of 3046 g of natural Nd2O3 powder. A half-life limit for the quadruple beta decay to the 01+ state of 150Gd was found to be T1/2 (0ν+4ν) > 8.7x10^20 yr (90% C.L.)....
Dr
Ekaterina Rukhadze
(IEAP CTU in Prague)
9/9/19, 5:10 PM
Neutrinos
Oral presentation in parallel session
The search for double capture 2νEC/EC in Cd-106 is performed on the TGV-2 spectrometer, located in the underground laboratory (LSM, Modane, France, 4800 m.w.e.). The TGV-2 spectrometer consists of 32 planar detectors with a total active surface of about 400 cm3. The detectors are arranged in pairs, and 16 Cd-106 foils (with an enrichment of 99.57% of Cd-106 and a total mass of ~ 23.2 g) are...
