Skip to Main content Skip to Navigation
Conference papers

Evaluation of the beta spectral shapes

Charlène Bisch 1 Xavier Mougeot 1, * Marie-Martine Bé 1
* Corresponding author
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Following an increased demand from users for a precise knowledge of beta spectra coupled with well-established uncertainties, LNHB is leading a study of beta spectral shapes at the metrological level. The evaluation of these beta spectra, especially to reach metrological uncertainties, requires new measurements and new calculations with high precision. The first part of this contribution will describe a new experimental setup for the measurement of beta energy spectra based on a silicon detector with a very thin entrance window and operating at liquid nitrogen temperatures under high-vacuum. Monte Carlo simulations were performed to optimize the detection chamber and source holder. Some preliminary results are included. The second part summarizes the calculations already implemented. These complex calculations are compared to some measurements of beta spectra obtained by using metallic magnetic calorimeters, and highlight the major contribution of the atomic screening and exchange effects at low energy.
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download
Contributor : Marie-France Robbe Connect in order to contact the contributor
Submitted on : Wednesday, February 12, 2020 - 9:46:11 AM
Last modification on : Friday, June 25, 2021 - 10:30:01 AM
Long-term archiving on: : Wednesday, May 13, 2020 - 1:03:11 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License




Charlène Bisch, Xavier Mougeot, Marie-Martine Bé. Evaluation of the beta spectral shapes. 16th International Congress of Metrology, Oct 2013, Paris, France. pp.07004, ⟨10.1051/metrology/201307004⟩. ⟨cea-02475474⟩



Record views


Files downloads