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What are the limitations of electron spectroscopy? 


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Electron spectroscopy encounters various limitations as highlighted in the provided contexts. One significant constraint arises from the Coulomb interaction within the electron cloud, leading to energy shifts and altered distributions of photoelectrons, especially in pulsed sources like free electron lasers . Additionally, x-ray energy dispersive spectroscopy faces challenges during tomographic hyperspectral imaging due to shadowing effects caused by the holder, impeding quantitative elemental analysis . Moreover, electron sources based on thermionic emission exhibit wide energy spreads, limiting energy resolution in electron spectroscopy applications . Understanding these limitations is crucial for enhancing the capabilities of electron spectroscopy techniques and advancing their applicability in various fields.

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The limitations of electron spectroscopy include challenges in unambiguously identifying dominant pathways in signals, especially when using finite pulse widths and amplitudes in both heterodyne-detected (HD) and fluorescence-detected (FD) techniques.
Limitations of electron spectroscopy include shadowing effects from specimen holder penumbra, restricting quantitative elemental tomographic analysis due to detector system obstruction in high-tilt configurations.
Limitations of electron spectroscopy include space-charge effects altering energy and angular distributions of photoelectrons, crucial for future pump-probe studies at free electron lasers and high-harmonic sources.
Limitations of electron spectroscopy include limited energy resolution. However, a new technology with a bright, highly collimated electron source promises record energy resolution, enhancing spectroscopic capabilities.
Open accessJournal ArticleDOI
Danny Summers, Run Shi 
4 Citations
Not addressed in the paper.

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