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利用4疴-γ符合装置和低能光子谱仪精确测量了161Tb衰变γ射线的发射几率。对于25.7 keV、48.9 keV和74.6 keV的低能γ射线,测定结果分别为0.2327 0.0053、0.1700 0.0031和0.1001 0.0019。表明本测量结果的不确定度明显减小。
The firing probability of 161Tb decay γ-rays was accurately measured using a 4 疴 -γ coincidence device and a low-energy photon spectrometer. For low energy gamma rays of 25.7 keV, 48.9 keV and 74.6 keV, the determination results were 0.2327 0.0053, 0.1700 0.0031 and 0.1001 0.0019, respectively. This shows that the uncertainty of the measurement results significantly reduced.