کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1879040 | 1042538 | 2012 | 7 صفحه PDF | دانلود رایگان |
The 230U half-life was determined by measuring the decay curve of 230U sources by various nuclear detection techniques: α-particle counting at a defined small solid angle; 4πα+β counting with a windowless CsI sandwich spectrometer, a liquid scintillation counter and a pressurised proportional counter; gamma-ray spectrometry with a HPGe detector and nearly-2π α-particle counting with an ion-implanted silicon detector. Depending on the technique, the decay was followed for 100–200 d, which is 5–10 times the 230U half-life. The measurement results of the various techniques were in good mutual agreement. The mean value, T1/2(230U)=20.23 (2) d, is lower than the literature value which is based on one measurement in 1948 and resulted in a half-life value of 20.8 d without statement of uncertainty. A correction for the ingrowth of the long-lived 210Pb and its daughter products may have been overlooked in the past.
► Half-life of 230U determined by various nuclear detection techniques.
► Result T1/2(230U)=20.23 (2) d is lower than the literature value.
► 230U/226Th decay series has potential use in alpha-immunotherapy.
Journal: Applied Radiation and Isotopes - Volume 70, Issue 9, September 2012, Pages 1900–1906