Measurement of the 171Tm half-life

TY - JOUR

T1 - Measurement of the 171Tm half-life

AU - Kajan, Ivan

AU - Pommé, Stefaan

AU - Heinitz, Stephan

N1 - Score=10

PY - 2021/12/1

Y1 - 2021/12/1

N2 - The half-life of 171Tm was measured by gamma-ray spectrometry, using the reference source method. The measured point-like source was prepared by homogenous mixing of 44Ti with 171Tm in order to obtain an identical detection geometry for both nuclides. The half-life of 171Tm was determined by following the count-rate ratio between the gamma-ray emissions at 66.73 keV (171Tm) and 67.9/78.3 keV (44Ti). The measurement campaign consisted of 280 measurements acquired over a period of 449 days, corresponding to about 60% of the half-life value. The result for the 171Tm half-life, 702.4 (70) d, is consistent with the currently recommended value, however the uncertainty assessment of the latter is poorly documented.

AB - The half-life of 171Tm was measured by gamma-ray spectrometry, using the reference source method. The measured point-like source was prepared by homogenous mixing of 44Ti with 171Tm in order to obtain an identical detection geometry for both nuclides. The half-life of 171Tm was determined by following the count-rate ratio between the gamma-ray emissions at 66.73 keV (171Tm) and 67.9/78.3 keV (44Ti). The measurement campaign consisted of 280 measurements acquired over a period of 449 days, corresponding to about 60% of the half-life value. The result for the 171Tm half-life, 702.4 (70) d, is consistent with the currently recommended value, however the uncertainty assessment of the latter is poorly documented.

KW - Measurement

KW - 171Tm half-life

KW - Gamma-ray spectrometry

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/overview/48013110

U2 - 10.1007/s10967-021-08108-w

DO - 10.1007/s10967-021-08108-w

M3 - Article

VL - 331

SP - 645

EP - 653

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

SN - 0236-5731

IS - 1

ER -