| Autor: |
Nguyen-Dang, T. T., Peters, M., Viau-Trudel, J., Couture-Bienvenue, E., Puthumpally-Joseph, R., Charron, E., Atabek, O. |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Molecular Physics 115, 1934 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1080/00268976.2017.1317858 |
| Popis: |
The fringe pattern that allows geometrical and orbital structure information to be extracted from LIED spectra of symmetric molecules is shown to reflect a symmetry conservation principle. We show that under a field polarization which preserves certain symmetry elements of the molecule, the symmetry character of the initial wave function is conserved during its time-evolution. We present a symmetry analysis of a deviation from a perfect alignment by decomposing the field into a major, symmetry-determining part, and a minor, symmetry breaking, part. This decomposition leads to a corresponding factorization of the time-evolution operator. The formalism is applied to the analysis of the robustness of LIED readings and inversions with respect to deviations from a perfect perpendicular and parallel alignment of a symmetric ABA triatomic molecule. The results indicate a particularly strong stability of the type of LIED spectra associated with the perpendicular alignment situation. |
| Databáze: |
arXiv |
| Externí odkaz: |
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