【摘要】 介绍了一种改进型NaI(Tl)γ谱仪的稳谱技术。该稳谱技术基于241Am源的等效γ峰作为系统的参考峰,根据参考峰位偏差运用数字PID调整可编程增益放大器来稳谱,是一种“硬件+参考源+软件”的稳谱技术。这种计算机稳谱技术具有稳定度高,稳谱速度快等优点。更多还原

【Abstract】 This paper introduces an improved technology for spectrum stabilization of NaI（Tl） gamma spectrum. This technology is based on the system using a reference peak, which is equivalent gamma peak of ²⁴¹Am source. The computer seeks peak’s （position） deviation and computes adjust value of programmable amplifier and controls （programmable） amplifier to stabilize spectrum by digital PID. This is a technology of （spectrum） stabilizing with “hardware+reference-peak+software” and has high stability and fast speed of spectrum stabilizing.更多还原