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Photoelectron spectroscopy with undispersed ultraviolet radiation
Applied Optics
|January 16, 2010
Summary
Minority emissions in rare gas UV radiation sources can distort photoelectron spectra. Zeolite gas trapping effectively cleans these spectra, improving accuracy for observing states like NO(+) and Hg(+).
Area of Science:
- Atomic and Molecular Physics
- Spectroscopy
- Radiation Science
Background:
- Photoelectron spectroscopy is sensitive to spectral interferences.
- Rare gas resonance line UV sources can produce unwanted minority emissions.
- These emissions can complicate the interpretation of observed ionic states.
Purpose of the Study:
- To identify the source of unwanted effects in photoelectron spectra.
- To investigate the role of minority emissions in rare gas UV sources.
- To demonstrate a method for spectral cleanup.
Main Methods:
- Analysis of photoelectron spectra from various rare gas UV sources.
- Characterization of minority emission lines.
- Application of zeolite gas trapping for spectral purification.
Main Results:
- Minority emissions were identified as a cause of spectral artifacts.
- These emissions were linked to observed states of NO(+) and Hg(+).
- Zeolite gas trapping significantly improved spectral quality.
Conclusions:
- Minority emissions in rare gas UV sources are a significant source of error in photoelectron spectroscopy.
- Zeolite gas trapping is an effective technique for mitigating these spectral artifacts.
- Improved spectral data aids in the accurate determination of ionic states.
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