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¹⁵⁶Eu衰变发射的γ射线绝对强度测量

Measurements of the Absolute Intensities for the γ-rays From ¹⁵⁶Eu Decay

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【Author】 LI Guang sheng, YANG Yi, CUI An zhi, PENG Zhao hua, CHEN Xi lin, YANG Zhi hong, BAO Jie (China Institute of Atomic Energy, Beijing 102413, China)

【机构】中国原子能科学研究院；中国原子能科学研究院北京102413；北京102413；北京102413；

【摘要】经热中子辐照过的154 Sm样品 ,用离子交换法进行化学分离 ,得到放射性核素156 Eu。用 4πβ γ符合装置测量放射性活度 ,以及用HPGe和小平面Ge探测器测量γ射线数。通过这些测量 ,精确测定了156 Eu衰变发射的γ射线绝对强度。测量结果的不确定度小于 2 %。更多还原

【Abstract】 Eu activity is obtained from the 154 Sm sample irradiated by reactor neutrons and through chemical separation by ion exchange technique. Activity is measured using 4πβ γ coincidence apparatus and photon counting is performed applying HPGe and small area planar Ge detectors. From these measurements the absolute intensities for the γ rays emitted from decay of 156 Eu are determined. The uncertainties of experimental results are less than 2%.更多还原