贝塔奥斯陆实验方法为研究高激发态下的放射性核素性质以及探究从铁到铀的元素核合成过程提供了一种重要的研究工具。本文提出了一种新型数据处理技术,旨在消除贝塔衰变电子对贝塔奥斯陆实验中了子核伽马退激衰变探测的影响,从而准确地展开观测到的伽马射线光谱。通过运用伽马射线与衰变电子的综合探测器响应函数矩阵,将列主元消去法与逐步迭代反解法相结合,确定真实的入射伽马光谱。通过模拟和反演计算,证实了所提出方法的可靠性与有效性。
The response functions of a 4 π summing BGO detector were established using extensive experimental measurements and GEANT4 simulation. The partial and total efficiencies for all components of the γ -ray interaction with the BGO detector were also measured. These response functions and efficiencies will be used in the β -Oslo method experiments to study the neutron capture cross sections of radioactive heavy ions. The application of the response functions of the BGO detector under simulated continuum γ -rays and source measurement γ -rays proves that the method and response functions are reliable.