Half-life measurement of 55Fe.
The half-life of 55Fe was determined experimentally and compared with literature values. A solid 55Fe source was prepared by electrodeposition and repeatedly measured in an X-ray detector at a constant, low solid angle. In total, more than six hundred measurements were performed over a period of ten months, corresponding to one third of the half-life. The experimental method and the corresponding uncertainty budget are presented. The result of 1005.2+/-1.4 days is slightly higher than the current recommended values.
Van Ammel
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European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel, Belgium. raf.van-ammel@cec.eu.int
Pommé
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Sibbens
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D000465:Algorithms; D003198:Computer Simulation; D017408:Guidelines as Topic; D006207:Half-Life; D007504:Iron Radioisotopes / Q000032:analysis* / Q000737:chemistry* / Q000592:standards; D008956:Models, Chemical; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D012015:Reference Standards; D012016:Reference Values
D007504:Iron Radioisotopes