Metallic magnetic calorimeters for beta spectrometry

Martin Loidl (1) , Matias Rodrigues (1) , Benjamin Censier (1) , S. Kowalski (1) , Xavier Mougeot (1) , Philippe Cassette (1) , Thierry Branger (1) , Didier Lacour (1)

1 LNHB - Laboratoire National Henri Becquerel

We are developing metallic magnetic calorimeters for beta spectrometry in the context of ionizing radiation metrology. The aim is the determination of the shape factors of beta spectra. Our latest detector has been designed to measure the spectrum of $^{241}$Pu, a pure beta emitter with an endpoint energy of 20.8 keV. We present the spectrum resulting from our first measurement and compare it with theoretical spectra.

Keywords: 241Pu; beta emitter; beta spectrum; beta spectrometry; calorimeters; metrology; ionizing radiations; Metallic magnetic calorimeters; ionizing radiation metrology; nuclear data

Domains: Instrumentation and Detectors [physics.ins-det]; Nuclear Experiment [nucl-ex]

Martin Loidl, Matias Rodrigues, Benjamin Censier, S. Kowalski, Xavier Mougeot, et al.. Metallic magnetic calorimeters for beta spectrometry. AIP Conference Proceedings, 2009, The Thirteenth International Workshop on Low Temperature Detectors—LTD13, 1185, pp.587. ⟨10.1063/1.3292410⟩. ⟨cea-02475291⟩