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Communications: When diffraction rules the stereodynamics of rotationally inelastic collisions

MPG-Autoren
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Lemeshko,  Mikhail
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Friedrich,  Bretislav
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Volltexte (frei zugänglich)

1002.1572v1.pdf
(Preprint), 624KB

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Zitation

Lemeshko, M., Jambrina, P. G., Miranda, M. P. d., & Friedrich, B. (2010). Communications: When diffraction rules the stereodynamics of rotationally inelastic collisions. Journal of Chemical Physics, 132, 161102-1-161102-4. doi:10.1063/1.3386530.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-F5D6-F
Zusammenfassung
Following upon our recent work on vector correlations in the Ar–NO collisions [PCCP 12, 1038 (2010)], we compare model results with close-coupling calculations for a range of channels and colli- sion energies for the He–NO system. The striking agreement between the model and exact polariza- tion moments indicates that the stereodynamics of rotationally inelastic atom-molecule collisions at thermal energies is governed by diffraction of matter waves from a two-dimensional repulsive core of the atom-molecule potential. Furthermore, the model polarization moments characterizing the He–NO, He–O₂, He–OH, and He–CaH stereodynamics are found to coalesce into a single, distinctive pattern, which can serve as a “fingerprint” to identify diffraction-driven stereodynamics in future work.