A novel measurement of the beta-decay half-life of O-14, and its relevance to the standard model

作者：Takau V T; Thompson M N^*; Scott R J; Rassool R P; O'Keefe G J

来源：Radiation Physics and Chemistry, 2012, 81(11): 1669-1672.

DOI：10.1016/j.radphyschem.2012.05.016

• O-14 beta-decay
• Half-life measurement
• Signal digitization
• CVC hypothesis
• Standard model

The half-life of the super-allowed beta-decay of O-14 has been measured to be 70.623 +/- 0.053 s. The O-14 was produced via the reaction C-12(He-13,n)O-14, and the decay was uniquely isolated using a triple-coincidence detection system. A novel digitisation technique, where every pulse was digitally recorded, guaranteed the integrity of the analysis. The half-life value was used to test the Conserved-Vector-Current (CVC) hypothesis, and thus indirectly the Standard Model.

• 出版日期2012-11