Confirmation of 20% error in the 209Po half-life

被引：9

作者：

Pomme, S. ^{[1
]}

Stroh, H. ^{[1
]}

Benedik, L. ^{[2
]}

机构：

[1] Commiss European Communities, Joint Res Ctr, Inst Reference Mat & Measurements, B-2440 Geel, Belgium

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

APPLIED RADIATION AND ISOTOPES | 2015年 / 97卷

关键词：

Half-life; Tracer; Po-209; Po-210; Error; Uncertainty; Radioactivity; Environment;

D O I：

10.1016/j.apradiso.2014.12.025

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

First results of a half-life measurement of Po-209 show 20% discrepancy with the formerly recommended value of 102 (5) years, which was based on a single experiment performed in 1956. After one year of measurement, a statistical uncertainty on T-1/2 of 3.5% has been reached and effects of long-term instability are assumed to be less than 5%. The preliminary half-life value obtained in this work, 120 (6) years, supports the newly determined value of 125.2 (33) years by Colle et al. (2014). The 20% error in the half-life has an impact on numerous measurements in which aged Po-209 solutions were used as a tracer. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：84 / 86

页数：3

共 50 条

[1] On the 209Po half-life error and its confirmation: a critique
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[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2016, 308 (01) : 271 - 278
[2] On the 209Po half-life error and its confirmation: a critique
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[J]. Journal of Radioanalytical and Nuclear Chemistry, 2016, 308 : 271 - 278
[3] On the 209Po half-life error and its confirmation: an answer to the critique
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[4] On the 209Po half-life error and its confirmation: an answer to the critique
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[10] THE HALF-LIFE OF PO-218
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