基于自适应陷波器的电子能量损失谱能量漂移的消除方法

摘要

The electron energy-loss spectrum (EELS) , which can help to obtain materials' electronic structure at nanoscale, is an important analytical technique in transmission electron microscopy. However, EEL Spectroscopy is very delicate and sensitive to the environment, e. g. mains interference, which would introduce energy drifts into EEL Spectrum. In this paper, we propose a method based on serial fast-response detector and adaptive notch filter to compensate the energy drifts due to the mains interference. Our results show that the adaptive notch filter can significantly reduce the energy drifts.%电子能量损失谱是透射电子显微术中一种重要的分析手段,它可以帮助人们从纳米尺度上认识材料的电子结构等信息.但电子能量损失谱仪特别容易受到周围环境因素的影响,比如说固定工频干扰,而产生电子能量损失谱能量的漂移.本文结合串行快响应能谱探测器和自适应陷波器手段,提出了一种消除电子能量损失谱中能量漂移的方法,实验结果表明这种方法能够有效消除电子能量损失谱中由于固定工频干扰所造成的能量漂移.