First Calorimetric Measurement of OI-line in the Electron Capture Spectrum of ${}^{163}$Ho

P. C. -O. Ranitzsch, C. Hassel, M. Wegner +6

The isotope ${}^{163}$Ho undergoes an electron capture process with a recommended value for the energy available to the decay, $Q_{\mathrm{EC}}$, of about 2.5 keV. According to the presen…