Results 221 to 230 of about 437,631 (265)
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Cold collisions of hot molecules
Physical Chemistry Chemical Physics, 2023Stimulated emission pumping is combined with imaging to study inelastic collisions of highly vibrationally excited NO down to 2 K. Results are compared to quantum close-coupling calculations on high-level potential energy surfaces.
Chatura A. Perera +3 more
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Cold Molecules: Preparation, Applications, and Challenges
Angewandte Chemie - International Edition, 2009AbstractResearch with cold molecules has developed rapidly in recent years. There is now a variety of established methods for cooling molecules into the millikelvin range. Nevertheless, a focal point of current research is directed toward finding new ways to bring the temperature of molecules even closer to absolute zero.
Gerard Meijer
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Cold and ultracold molecules in the twenties
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023A diversity of experimental techniques has been developed over the last 25 years to create samples of molecular gases at temperatures close to the Absolute Zero—here we consider samples in the range from 10s of Kelvin (cold) down to 10s of nanoKelvin (ultracold). In these exotic physical environments, a range of novel experiments can be conducted which
Tim Softley
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The Quest for Cold and Ultracold Molecules
ChemPhysChem, 2009AbstractCool molecules: The cooling of molecules to sub‐Kelvin temperatures promises to have a great impact in chemistry and physics. Recently, the first experimental realizations of samples of deeply bound molecules that are approaching the ultracold regime were reported. In this contribution, these interesting results are briefly discussed.
David W, Chandler, Kevin E, Strecker
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Cold Collisions of Electrons with Molecules
Few-Body Systems, 2002Results are presented of high-resolution scattering experiments involving electron collisions with CO2 and CS2, between a few meV and 200 meV impact energy. Virtual state scattering is shown to dominate the low-energy behaviour for both species. The most striking features of the scattering spectrum for CS2 are, however, giant resonances with cross ...
Jones, N.C. +3 more
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Low Temperatures and Cold Molecules
2008The Chemistry of Cold Interstellar Cloud Cores Gas-Phase Reactive Collisions at Very Low Temperatures: Recent Experimental Advances and Perspectives The Study of Cold Collisions Using Ion Guides and Traps Theory of Low-Temperature Gas-Phase Reactions Molecular Spectroscopy at Low Temperatures: A High-Resolution Infrared Perspective The Production and ...
S.Y.T. van der Meerakker +2 more
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Why are Cold Molecules so Hot?
ChemPhysChem, 2009AbstractBrrrr! Cold molecule and cold atom research are juxtaposed and the challenges in cooling and trapping molecules are recounted. Both indirect and direct techniques of producing cold and slow molecules (such as buffer‐gas cooling and magnetic trapping, see picture) are described.
Friedrich, B., Doyle, J.
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SPIE Proceedings, 2002
An experiment is described in which 10 8 CaH molecules have been confined in a magnetic trap at a temperature of 400 mK. The elastic scattering cross section of CaH on 3 He was measured to be σ el equals(1.5±0.6)×10 -14 cm 2 . A lower bound of Γ rotational g10 -15 cm 3 s -1 was placed on the rotational elastic collision rate coefficient, and an ...
Robert deCarvalho +3 more
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An experiment is described in which 10 8 CaH molecules have been confined in a magnetic trap at a temperature of 400 mK. The elastic scattering cross section of CaH on 3 He was measured to be σ el equals(1.5±0.6)×10 -14 cm 2 . A lower bound of Γ rotational g10 -15 cm 3 s -1 was placed on the rotational elastic collision rate coefficient, and an ...
Robert deCarvalho +3 more
openaire +1 more source
2009
COLD COLLISONS Theory of Cold Atomic and Molecular Collisions, J.M. Hutson Electric Dipoles at Ultralow Temperatures, J.L. Bohn Inelastic Collisions and Chemical Reactions of Molecules at Ultracold Temperatures, G. Quemener, N. Balakrishnan and A. Dalgarno Effects of External Electromagnetic Fields on Collisions of Molecules at Low Temperatures, T.V ...
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COLD COLLISONS Theory of Cold Atomic and Molecular Collisions, J.M. Hutson Electric Dipoles at Ultralow Temperatures, J.L. Bohn Inelastic Collisions and Chemical Reactions of Molecules at Ultracold Temperatures, G. Quemener, N. Balakrishnan and A. Dalgarno Effects of External Electromagnetic Fields on Collisions of Molecules at Low Temperatures, T.V ...
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