Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Activity determination of 60Co and the importance of its beta spectrum

Abstract : The activity concentration of a $^{60}$Co solution was measured by means of two 4$\pi\beta$-$\gamma$ coincidence counting systems using a liquid scintillation counter and a proportional counter (PC) in the beta channel, respectively. Additional liquid scintillation measurements were carried out and CIEMAT/NIST efficiency tracing as well as the triple-to double coincidence ratio (TDCR) methods were applied to analyse the data. The last two methods require computed beta spectra to determine the counting efficiencies. The results of both 4$\pi\beta$-$\gamma$ coincidence counting techniques are in very good agreement and yield a robust reference value. The initial activity concentration determined with liquid scintillation counting was found to be significantly lower than the results from 4$\pi\beta$-$\gamma$ a coincidence counting. In addition, the results from TDCR and CIEMAT/NIST show some inconsistency. The discrepancies were resolved by applying new beta spectrum calculations for the dominant allowed beta transition of $^{60}$Co. The use of calculations which take screening effects as well as the atomic exchange effect into account leads to good agreement between all four methods; the combination of these techniques delivers an important validation of beta spectra.
Document type :
Journal articles
Complete list of metadata

Cited literature [27 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-01799862
Contributor : Léna Le Roy Connect in order to contact the contributor
Submitted on : Tuesday, February 11, 2020 - 10:37:15 AM
Last modification on : Thursday, February 17, 2022 - 10:08:03 AM

File

Openaccess_KarstenKossert_Appl...
Publication funded by an institution

Identifiers

Citation

Karsten Kossert, Justyna Marganiec-Galazka, Xavier Mougeot, Ole J. Naehle. Activity determination of 60Co and the importance of its beta spectrum. Applied Radiation and Isotopes, Elsevier, 2018, 134 (SI), pp.212-218. ⟨10.1016/j.apradiso.2017.06.015⟩. ⟨cea-01799862⟩

Share

Metrics

Record views

66

Files downloads

81