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摘要
The beta -delayed proton precursor Yb-149 was synthesized in the reaction Sn-112 (Ca-40, 3n) and identified by using a proton-gamma coincidence measurements in combination with a helium-jet fast tape transport system. Its beta -delayed proton spectrum was observed. The half-life of Yb-149 was determined to be 0.7 +/- 0.2 s. The 253, 101, and 365 keV gamma transitions in Dy-147, following beta -delayed proton emission of Ho-148 decay, were reported for the first time.
- 出版日期2001-9
- 单位中国科学院近代物理研究所
