Determination of the half-life of gadolinium-148

Nadine M. Chiera; Rugard Dressler; Peter Sprung; Zeynep Talip; Dorothea Schumann

doi:10.1016/j.apradiso.2023.110708

Determination of the half-life of gadolinium-148

Nadine M. Chiera, Rugard Dressler, Peter Sprung, Zeynep Talip, Dorothea Schumann

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The half-life of the alpha-emitter ¹⁴⁸Gd was measured using the “direct method”, in which the number of atoms is directly determined and their activity is then measured. Pure Gd samples containing megabecquerels of ¹⁴⁸Gd were obtained by reprocessing proton-irradiated tantalum material. Multicollector-inductively coupled plasma mass spectrometry was performed to determine the amount of ¹⁴⁸Gd atoms retrieved. The activity of the ¹⁴⁸Gd atoms contained in the Gd sample was measured by means of alpha-spectrometry. The half-life of ¹⁴⁸Gd was deduced to be 86.9 years, with a combined uncertainty of 4.5%.

Original language	English
Article number	110708
Journal	Applied Radiation and Isotopes
Volume	194
DOIs	https://doi.org/10.1016/j.apradiso.2023.110708
State	Published - Apr 2023
Externally published	Yes

Funding

The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Dorothea Schumann reports financial support was provided by Swiss National Science Foundation.This project is funded by the Swiss National Science Foundation (SNF grant no 200021-159738). This project is funded by the Swiss National Science Foundation (SNF grant no 200021-159738 ).

Keywords

ERAWAST
Exotic radionuclide
Gd-148
Half-life
Radio-lanthanide

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10.1016/j.apradiso.2023.110708

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title = "Determination of the half-life of gadolinium-148",

abstract = "The half-life of the alpha-emitter 148Gd was measured using the “direct method”, in which the number of atoms is directly determined and their activity is then measured. Pure Gd samples containing megabecquerels of 148Gd were obtained by reprocessing proton-irradiated tantalum material. Multicollector-inductively coupled plasma mass spectrometry was performed to determine the amount of 148Gd atoms retrieved. The activity of the 148Gd atoms contained in the Gd sample was measured by means of alpha-spectrometry. The half-life of 148Gd was deduced to be 86.9 years, with a combined uncertainty of 4.5%.",

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AU - Chiera, Nadine M.

AU - Dressler, Rugard

AU - Sprung, Peter

AU - Talip, Zeynep

AU - Schumann, Dorothea

PY - 2023/4

Y1 - 2023/4

N2 - The half-life of the alpha-emitter 148Gd was measured using the “direct method”, in which the number of atoms is directly determined and their activity is then measured. Pure Gd samples containing megabecquerels of 148Gd were obtained by reprocessing proton-irradiated tantalum material. Multicollector-inductively coupled plasma mass spectrometry was performed to determine the amount of 148Gd atoms retrieved. The activity of the 148Gd atoms contained in the Gd sample was measured by means of alpha-spectrometry. The half-life of 148Gd was deduced to be 86.9 years, with a combined uncertainty of 4.5%.

AB - The half-life of the alpha-emitter 148Gd was measured using the “direct method”, in which the number of atoms is directly determined and their activity is then measured. Pure Gd samples containing megabecquerels of 148Gd were obtained by reprocessing proton-irradiated tantalum material. Multicollector-inductively coupled plasma mass spectrometry was performed to determine the amount of 148Gd atoms retrieved. The activity of the 148Gd atoms contained in the Gd sample was measured by means of alpha-spectrometry. The half-life of 148Gd was deduced to be 86.9 years, with a combined uncertainty of 4.5%.

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KW - Exotic radionuclide

KW - Gd-148

KW - Half-life

KW - Radio-lanthanide

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JO - Applied Radiation and Isotopes

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Determination of the half-life of gadolinium-148

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