瞬态微弱信号输出稳定性分析

本文分析了在辐射探测瞬态微弱信号获取中,系统输出不稳定的原因,并通过改变放大电路中的反馈网络结构,利用频域特性,采用最佳相位补偿的方法实现微弱信号稳定放大输出。最后利用CZT探测器在低能γ射线的辐射探测系统中验证测试,实验表明,辐射脉冲信号调理系统通过增加稳定性措施后,可有效提高CZT探测器对~(241)Am源的能量分辨率。

Stability Analysis of Transient Weak Signal Output

In order to stabilize the output of fast weak pulse in radiation detection,the paper analyzed the system output instability reasons and introduced an available method based on frequency field.It achieved the signal magnified output through the best phase compensation as changing the feedback net of the weak pulse magnify circuit.At last,the method of design amplifier had applied in the svstem of CZT detector in low energy gamma ray radiation detection.Experiments show that radiation pulse signal conditioning system by adding stability measures could effectively improve the CZT energy resolving power to 241 Am source.