Spectral restoration and energy resolution improvement of electron energy-loss spectra by Pixon reconstruction: II. Application to practical ELNES analysis of low SNR.
We applied Pixon deconvolution as introduced in Part I to several practical, examples of low signal-to-noise ratio (SNR), electron energy-loss spectra with a goal toward restoring their fine spectral features and/or improving the energy resolution. We demonstrate that by directly fitting the two-dimensional spectral data recorded on the CCD; the method enables us to reveal fine spectral structures. Consequently, Pixon reconstruction extends the ability to probe electronic states in very spatially localized areas, a capability currently unique to our method.
Muto
Shunsuke
S
Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan. s-mutoh@nucl.nagoya-u.ac.jp
Tatsumi
Kazuyoshi
K
Puetter
Richard C
RC
Yoshida
Tomoko
T
Yamamoto
Yu
Y
Sasano
Yusuke
Y
D000465:Algorithms; D004577:Electron Probe Microanalysis; D004734:Energy Metabolism; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D013057:Spectrum Analysis / Q000379:methods*