<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Measurement of a high energy resolution and high\r\nstatistics 163Ho electron capture spectrum for the\r\nECHo experiment"^^ . "The goal of the ECHo collaboration is to reach a sub-eV sensitivity on the effective\r\nelectron neutrino mass by the analysis of the high energy resolution and high\r\nstatistics 163Ho electron capture spectrum measured with metallic magnetic micro\r\ncalorimeters. Within this thesis several measurements have been performed for detector\r\noptimization and for a study of the spectral shape of the 163Ho . In a first\r\nmeasurement the heat capacity of Ho-ions implanted in gold absorbers was measured.\r\nIt was found that an implanted activity per pixel of a = 10 Bq does not\r\ncompromise in a noticeable way the performance of the detector at T = 20 mK. To\r\ntest the performance of MMC detectors shielded by rock and to check this option\r\nof operation for future ECHo phases, an experiment was performed in an underground\r\nlab. This measurement allowed for the first time a detailed investigation\r\nof the 163Ho spectral shape. Furthermore, was a first high statistic 163Ho spectrum\r\nacquired. The analysis allows for a determination of the Q-value of the 163Ho EC\r\nwith Q = 2.837 +- 0.005 (stat) +- 0.005 (syst) keV and to perform a first analysis of the end\r\npoint region of the spectrum to extract an effective electron neutrino mass."^^ . "2020" . . . . . . . "Clemens"^^ . "Velte"^^ . "Clemens Velte"^^ . . . . . . "Measurement of a high energy resolution and high\r\nstatistics 163Ho electron capture spectrum for the\r\nECHo experiment (PDF)"^^ . . . "Dissertation.pdf"^^ . . . "Measurement of a high energy resolution and high\r\nstatistics 163Ho electron capture spectrum for the\r\nECHo experiment (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #27340 \n\nMeasurement of a high energy resolution and high \nstatistics 163Ho electron capture spectrum for the \nECHo experiment\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .