Regensburg 2019 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 67: Cryogenic Particle Detectors and Other Superconducting Electronics
TT 67.2: Vortrag
Freitag, 5. April 2019, 09:45–10:00, H4
Development of a Beta Spectrometry Setup using Metallic Magnetic Calorimeters — •Michael Paulsen1,2, Jörn Beyer1, Lina Bockhorn3, Christian Enss2, Sebastian Kempf2, Karsten Kossert3, Martin Loidl4, Riham Mariam4, Ole Nähle3, Philipp Ranitzsch3, and Matias Rodrigues4 — 1Physikalisch-Technische Bundesanstalt, Berlin, Germany — 2Kirchhoff-Institute for Physics, Heidelberg University, Germany — 3Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany — 4CEA, LIST, Laboratoire National Henri Becquerel, Saclay, France
The precise knowledge of beta spectrum shapes is relevant in radionuclide metrology, e.g. when determining the activity of samples containing beta emitting isotopes, as well as in fundamental research or applications such as nuclear medicine. Employing Metallic Magnetic Calorimeters (MMCs) with the radionuclide sample embedded in a 4π absorber geometry has proven to be among the best beta spectrometers in terms of energy resolution, notably for low energy beta transitions. This presentation discusses a new MMC-based beta spectrometer that is being developed within the MetroBeta project that operates at temperatures < 20 mK. We present initial beta spectra measurements of Cl-36 (Emax = 709.5 keV) using the newly developed setup, including a discussion of the data acquisition and evaluation used.