Evidence for the Exchange Effect Down to Very Low Energy in the Beta Decays of 63Ni and 241Pu

M. Loidl 1, * C. Le-Bret 1 M. Rodrigues 1 X. Mougeot 1
* Corresponding author
1 LNHB - Laboratoire National Henri Becquerel
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
Abstract : Metallic magnetic calorimeters have been used for several years for the determination of the shapes of beta spectra. Experimental spectra of the beta decays of 63Ni and 241Pu exhibit, at very low energy, strong deviations from standard theoretical calculations including corrections for screening, radiative, and nuclear size effects. These discrepancies can be attributed to the atomic exchange effect. In particular the spectrum of 63Ni measured with an electroplated 63Ni source is in excellent agreement with theory including the exchange effect. This underlines the quality of the experimental spectrum as well as the correctness of the calculation of the exchange effect.
Keywords : Exchange effect Metallic magnetic calorimeters Beta spectrometry
Document type :
Journal articles
Complete list of metadatas
https://hal-cea.archives-ouvertes.fr/cea-01834215
Contributor : Marie-France Robbe <>
Submitted on : Tuesday, July 10, 2018 - 12:39:18 PM
Last modification on : Wednesday, September 4, 2019 - 1:40:15 PM

Identifiers

Collections

CEA | DRT | LIST | DM2I

Citation

M. Loidl, C. Le-Bret, M. Rodrigues, X. Mougeot. Evidence for the Exchange Effect Down to Very Low Energy in the Beta Decays of 63Ni and 241Pu. Journal of Low Temperature Physics, Springer Verlag (Germany), 2014, 176, pp.1040 - 1045. ⟨10.1007/s10909-014-1190-9⟩. ⟨cea-01834215⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

62

Contact

Informations

CCSD