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  • 标题:Half-life measurements of neutron-deficient isotopes using laser Compton scattering Gamma-rays at NewSUBARU
  • 本地全文:下载
  • 作者:T. Hayakawa
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2008
  • 卷号:2008
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:We measure half-lives of the ground state of 184Re and an isomer in 164Ho, which are populated by (g ,n) reactions with laser Compton scattering (LCS) g -ray source at NewSUBARU. These neutron-deficient isotopes are located on nucleosynthesis flows of the supernova g process. The measured half-life of 35.4 § 0.3 d for 184Re is shorter than the previous half-life of T1=2 = 38.0 § 0.5 by about 7%. The half-life of the 164Ho isomer is 36.4 § 0.3 min. This is about 3% shorter than a recommended value T1=2 = 37.5 +1:5 ¡0:5 min. These results indicate that half-lives of all unstable nuclei near the b stability line may be not robust and that the LCS g -rays are useful for precise determination of the half-lives.
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