Emission of photon pairs by the two-photon decay process from silver and hafnium atomswith a vacancy in the K shell was investigated. Radioactive decay of 109Cd and 179Tawas used to generate the K-shell vacancy states in silver and hafnium atoms, respectively.The measuring system consisted of a pair of planar high-purity germanium detectors, afast-slow coincidence system, and a 128x512x512 channel pulse-height analyzer.Two-dimensional spectra of numbers of events as functions of amplitudes of coincidentpulses from the two detectors were analyzed. The results on the 3d face="symbol">
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机译：研究了在K壳中空位的银和by原子通过双光子衰变过程发出的光子对。 109 Cd和 179 Tawas的放射性衰变分别用于在银原子和ha原子中产生K壳空位状态。测量系统由一对平面高能原子组成。纯度锗探测器，快速慢速重合系统和128x512x512通道脉冲高度分析仪。分析了两个探测器的事件数作为重合脉冲幅度函数的二维光谱。 3d face =“ symbol”>上的结果
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