摘要
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。
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.
出处
《电子显微学报》
CAS
CSCD
2013年第1期1-5,共5页
Journal of Chinese Electron Microscopy Society
基金
国家自然科学基金资助项目(No.50831001
No.50971075)
关键词
电子能量损失谱
自适应陷波器
能量漂移
electron energy-loss spectrum
adaptive notch filter
energy drifts
