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为了将高纯锗(HPGe)探测器用于快定时的物理实验中,本实验研究厂影响高纯锗探测器定时谱仪时间性能的各种因素,找出了获得谱仪最小时间分辨的各种最佳参数。并建立了分辨时间为4.19ns,能量分辨率为20keV,微分非线性好于±2.0%,计效率可承受120×10 ̄3s ̄(-1)的时间微分扰动角关联谱仪。利用此谱仪,以 ̄(204)Bi为探针核,研究了Bi系高温超导的微观机理,取得了较好的结果。
In order to use high-purity germanium (HPGe) detectors in fast time-consuming physical experiments, the present study investigated various factors that affect the time performance of high purity germanium detector timing spectrometers and found out the best ways to obtain the minimum time- Best parameter The time differential perturbation angle correlation spectrometer with resolution time of 4.19ns, energy resolution of 20keV, differential nonlinearity of better than ± 2.0% and efficiency of 120 × 10 ~ 3s ~ (-1) is established. Using this spectrometer, ~ (204) Bi was used as the probe nucleus to study the microscopic mechanism of Bi-based high-temperature superconductors and obtain good results.