Gamma-Gamma Directional Correlation in the Decay of 168Tm

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概要

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• Time-integral and time-differential gamma-gamma directional correlation measurements were performed for cascades in 168Er populated froin the decay of I 68Tm (90d.). The mixing parameters of most of the intense gamma-rays have been determined more precisely than ever. Some ambiguities concerning to the directional correlation coefficients of the 447-198 keV and 447-830 keV cascades were well removed. The directional correlation coefiicients of these cascades were determined as A22=0.009 0.003 and -O.oe7 0.008, respectively, and A44 -- O for both. The mixing parameters of the 198-, 447- and 830-keV gamma-rays were determined as 6(198)=0.13:1:0.02, 6(447)=0.09 0.01 and 6(830)= 0.05 0.03, rcspectively. The transition probabilities of the gamma-rays deexcit-ing the 1094-keV Ievel are deduced on the basis of this work. RADIOACTIVITY 168Er from electron capture decay of 168Tm, measured y-y(O). y-y(O. t). 168Er deduced directional correlation coeficient. mixing parameter. transition probability. Ge(Li). Nal(Tl) detectors. Ge(Li)-Ge(Li) coinc. . Ge(Li)LNal(Tl) time-differential coinc.

• 社団法人日本物理学会の論文
• 1981-10-15

著者

• IWASHITA Takeki

  Department of Physics,Tokyo Gakugei University

• Iwashita Takeki

  Department Of Physics Tokyo Gakugei University

関連論文

• K-Capture Probabilities and Some B (E2)Ratios in the Decay of ^Eu
• Lifetime of the 321keV Level in ^125
• Docay of Eu^
• Gamma-Gamma Angular Correlations in Sb^
• Decay of Ce^
• The Energy Levels of Te^
• Gamma-Gamma Directional Correlation in the Decay of 168Tm
• The Energy Levels of Te^
• K-Capture Probabilities in the Decay of ^Yb to ^Tm
• Decay Of Eu^

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