AI Article Synopsis
- The study analyzes the X-ray photoelectron spectra of N2+ in specific electronic states, focusing on the influence of photon energies and polarization vector orientations.
- It finds notable variations in spectral line widths based on X-ray polarization and the symmetry of final electronic states, indicating the role of rotational Doppler broadening in photoelectron emission.
- The researchers propose that the observed differences in rotational Doppler broadening for symmetric (gerade) and asymmetric (ungerade) final states can be explained by a double-slit interference effect described by Young's experiment.
Article Abstract
The vibrationally resolved X-ray photoelectron spectra of X2Σg+(3σg−1) and B2Σu+(2σu−1) states of N2+ were recorded for different photon energies and orientations of the polarization vector. Clear dependencies of the spectral line widths on the X-ray polarization as well as on the symmetry of the final electronic states are observed. Contrary to the translational Doppler, the rotational Doppler broadening is sensitive to the photoelectron emission anisotropy. On the basis of theoretical modeling, we suggest that the different rotational Doppler broadenings observed for gerade and ungerade final states result from a Young's double-slit interference phenomenon.
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| http://dx.doi.org/10.1021/acs.jpclett.5b00325 | DOI Listing |
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