State-to-state chemistry at ultra-low temperature
| Autor: | Wolf, Joschka, Deiß, Markus, Krükow, Artjom, Tiemann, Eberhard, Ruzic, Brandon P., Wang, Yujun, D'Incao, José P., Julienne, Paul S., Denschlag, Johannes Hecker |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Science 358, 921 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1126/science.aan872 |
| Popis: | Fully understanding a chemical reaction on the quantum level is a long-standing goal in physics and chemistry. Experimental investigation of such state-to-state chemistry requires both the preparation of the reactants and the detection of the products in a quantum state resolved way, which has been a long term challenge. Using the high level control in the ultracold domain, we prepare a few-body quantum state of reactants and demonstrate state-to-state chemistry with unprecedented resolution. We present measurements and accompanying theoretical analysis for the recombination of three spin-polarized ultracold Rb atoms forming a weakly bound Rb$_2$ dimer. Detailed insights of the reaction process are obtained that suggest propensity rules for the distribution of reaction products. The scheme can readily be adapted to other species and opens a door to detailed investigations of inelastic or reactive processes in domains never before accessible. Comment: 27 pages, 11 figures, including Supplementary Information |
| Databáze: | arXiv |
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