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The COBRA Experiment intends to use CdZnTe coplanar grid (CPG) detectors to search for neutrinoless double beta-decay. The current demonstrator phase with 64 detectors with a volume of (10 × 10 × 10) mm3 showed that a long-term low-background experiment using CdZnTe is feasible. In the next stage, (20 × 20 × 15) mm3 detectors with a coplanar quad-grid (CPqG) will be used. The use of larger devices...
The aim of the COBRA experiment is to search for the existence of neutrinoless double beta-decay (0nββ-decay) with CZT semiconductor detectors. One key instrument to reach the required half-life sensitivity of several 1026 years is to differentiate between signal and background events. The 0nββ-signal is expected to be almost always a single-site event (SSE) within only one detector. Hence, all multi-site...
Neutrino oscillation experiments have shown that neutrinos must have a finite rest mass, but are unable to put a number on how massive they are. The COBRA experiment makes use of the expected neutrinoless double beta decay (0υββ-decay) to directly determine the effective Majorana mass of the electron neutrino. This mass can be derived from a measurement of the half-life of the 0υββ-decay using Cadmium...
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