Regensburg 2022 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 31: Superconducting Electronics and Cryogenics: Poster Session

TT 31.10: Poster

Thursday, September 8, 2022, 15:00–18:00, P1

PrimA-LTD: Towards new primary activity standardization methods based on low-temperature detectors — •Alexander Göggelmann¹, Joern Beyer², Christian Enss^3,6, Sebastian Kempf^4,6, Karsten Kossert¹, Martin Loidl⁵, Michael Müller⁴, Ole Nähle¹, Michael Paulsen², Philipp Chung-On Ranitzsch¹, Matias Rodrigues⁵, and Mathias Wegner^4,6 — ¹Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany — ²Physikalisch-Technische Bundesanstalt (PTB), Berlin, Germany — ³Kirchhoff-Institute for Physics, Heidelberg University, Germany — ⁴Institute of Micro- and Nanoelectronic Systems, Karlsruhe Institute of Technology, Karlsruhe, Germany — ⁵CEA, LIST, Laboratoire National Henri Bequerel, Saclay, France — ⁶Institute for Data Processing and Electronics, Karlsruhe Institute of Technology, Karlsruhe, Germany

Radionuclide metrology, and in particular, activity standardization, is based on well-established measurement techniques that have been used and improved for decades. The methods and the achievable uncertainty are, however, very dependent on the type of radiation that is emitted and the quality of the available decay data. A major part of the EMPIR project “PrimA-LTD” consists in developing new primary techniques and in particular the high-resolution spectrometry of ²⁴¹Am, ¹²⁹I and ⁵⁵Fe using magnetic microcalorimeters (MMCs). The presentation will focus on the experimental details including the MMC detector setup, sample preparation and planned spectral measurements with more than 108 counts and energy thresholds below 50 eV.