【摘要】 为在γ放射性活度很大的测量中使测量系统得到更好的准确度,本文使用干扰源研究HPGe探测器得到了测量系统死时间与计数损失的关系。在γ能量为0.3~1.3 MeV时进行实验,使用104~105 Bq量级的放射源,修正能峰的计数率一般保持在几十s-1,证明在误差范围(3%)内,计数损失随死时间变化的关系与射线能量和计数强度无关,任意强度的任意核素均可使用这一修正公式进行计数损失修正。更多还原

【Abstract】 The relationship between dead-time and count correction factor was investigated by using interference source for purpose of highγactivity measurement.The count rates maintain serval 10s-1 with γ energy of 0.3-1.3 MeV for 104-105 Bq radioactive source.It is proved that the relationship between count loss and dead-time is unconcerned at various energy and various count intensities.The same correction formula can be used for any nuclide measurement.更多还原