Electron energy loss spectroscopy with parallel readout of energy and momentum Review of Scientific Instruments 88, 033903 (2017); https://doi. A new spectral restoration algorithm of reflection electron energy loss spectra is proposed. It is based on the maximum likelihood principle as implemented in the iterative Lucy-Richardson approach. Resolution is enhanced and point spread function recovered in a semi-blind way by forcing cyclically the zero loss to converge towards a Dirac peak.

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... c phonon spectra of TiO 2 are used as a test bed to discuss resolution enhancement, convergence benefit, stability towards noise, and apparatus function recovery. Attention is focused on the interplay between spectral restoration and quasi-elastic broadening due to free carriers. A resolution enhancement by a factor up to 6 on the elastic peak width can be obtained on experimental spectra of TiO 2 (110) and helps revealing mixed phonon/plasmon excitations. C 2015 AIP Publishing LLC. [http://dx.