AI Article Synopsis
- The article compares molecular collisions, focusing on reactive collisions, in both "warm" conditions and ultracold environments, where deBroglie wavelengths are longer than interaction ranges.
- Ultracold collisions are more sensitive to initial interactions, allowing for potential control through external fields to influence reactions.
- Despite this potential, ultracold collisions face limitations in observable dynamics due to kinematic constraints, while exit dynamics in exoergic reactions resemble those in warmer collisions.
Article Abstract
This introductory article contrasts molecular collisions, particularly reactive collisions, in the familiar "warm" domain with the ultracold regime where the relative deBroglie wavelengths become long compared with the range of interaction of the collision partners. Ultracold collisions have much greater sensitivity to entrance channel interactions, so offer the prospect of tuning by external fields to control onset of reaction. However, for ultracold collisions, kinematic constraints impose severe limitations on the observable dynamical properties. In the exit channel for appreciably exoergic reactions, the deBroglie wavelengths become short, so the exit dynamics are much like those for warm collisions. Reactions of alkali dimers, halides, and monoxide molecules are discussed that seem especially congenial for cold collision studies.
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| http://dx.doi.org/10.1039/b910118g | DOI Listing |
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