| Autor: |
Kirste, Moritz, Wang, Xingan, Schewe, H. Christian, Meijer, Gerard, Liu, Kopin, van der Avoird, Ad, Janssen, Liesbeth M. C., Gubbels, Koos B., Groenenboom, Gerrit C., van de Meerakker, Sebastiaan Y. T. |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Science 338, 1060 (2012) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1126/science.1229549 |
| Popis: |
Whereas atom-molecule collisions have been studied with complete quantum state resolution, interactions between two state-selected molecules have proven much harder to probe. Here, we report the measurement of state-resolved inelastic scattering cross sections for collisions between two open-shell molecules that are both prepared in a single quantum state. Stark-decelerated OH radicals were scattered with hexapole-focused NO radicals in a crossed beam configuration. Rotationally and spin-orbit inelastic scattering cross sections were measured on an absolute scale for collision energies between 70 and 300 cm$^{-1}$. These cross sections show fair agreement with quantum coupled-channels calculations using a set of coupled model potential energy surfaces based on ab initio calculations for the long-range non-adiabatic interactions and a simplistic short-range interaction. This comparison reveals the crucial role of electrostatic forces in complex molecular collision processes. |
| Databáze: |
arXiv |
| Externí odkaz: |
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