18F half-life measurement using a high-purity germanium detector

Jubong Han; K B Lee; T S Park; J M Lee; P J Oh; S H Lee; Y S Kang; J K Ahn

doi:10.1016/j.apradiso.2012.07.015

18F half-life measurement using a high-purity germanium detector

Appl Radiat Isot. 2012 Nov;70(11):2581-5. doi: 10.1016/j.apradiso.2012.07.015. Epub 2012 Aug 2.

Authors

Jubong Han¹, K B Lee, T S Park, J M Lee, P J Oh, S H Lee, Y S Kang, J K Ahn

Affiliation

¹ Korea Research Institute of Standards and Science, Daejeon 305-600, Republic of Korea.

PMID: 22940412
DOI: 10.1016/j.apradiso.2012.07.015

Abstract

The half-life of (18)F has been measured using HPGe detectors with a (137)Cs reference source. The counting ratio of 511 keV γ-rays from (18)F to 622 keV γ-rays from (137)Cs was fitted for the half-life with a weighted least-square method. Uncertainties due to the systematic effects arising from the measurement of a high activity (18)F source were studied in detail. The half-life of (18)F was found to be (109.72±0.19) min. The result is in a good agreement with the recommended value of (109.728±0.019) min evaluated at the Laborotaire National Henri Becquerel (LNHB).

MeSH terms

Cesium Radioisotopes
Fluorine Radioisotopes / chemistry*
Fluorodeoxyglucose F18
Gamma Rays
Half-Life
Radioactivity
Reference Standards
Uncertainty

Substances

Cesium Radioisotopes
Fluorine Radioisotopes
Fluorodeoxyglucose F18