![]() ![]() We outline here the project with its technical challenges and perspectives. ![]() It will also establish the potential of this approach to extend the sensitivity down to 0.1 eV. HOLMES will be an important step forward in the direct neutrino mass measurement with a calorimetric approach as an alternative to spectrometry. The resulting mass sensitivity will be as low as 0.4 eV. HOLMES will deploy a large array of low temperature microcalorimeters with implanted 163Ho nuclei. (1) The condition for electron capture decay is. In electron capture the nucleus decays by absorbing an atomic electron and emitting a neutrino. Relaxation of a vacancy in the K shell by X-ray and Auger emission. Lusignoli, but only recently the detector technological progress allowed to design a sensitive experiment. Typical atomic events involving the K -shell are shown in Figure 2. This measurement was proposed in 1982 by A. The calorimetric measurement eliminates systematic uncertainties arising from the use of external beta sources, as in experiments with beta spectrometers. The half-life (T 1 /2 ) of 7 Be endohedral C 70 ( 7. HOLMES will perform a calorimetric measurement of the energy released in the decay of 163Ho. The decay rate of 7 Be electron capture in C 70 and Be metal was measured employing a reference method. Alpert and 37 other authors Download PDF Abstract:The European Research Council has recently funded HOLMES, a new experiment to directly measure the neutrino mass. Download a PDF of the paper titled HOLMES - The Electron Capture Decay of 163Ho to Measure the Electron Neutrino Mass with sub-eV sensitivity, by B.
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