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Cooling and quenching of Mg24H(X Σ) by He4(1S) in a Coulomb trap: A quantum study of the dynamics

Physical Review A - Atomic, Molecular, and Optical Physics, ISSN: 1050-2947, Vol: 84, Issue: 1
2011
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The quantum dynamics of the rotational quenching of the Mg24H(X 1Σ) molecular cation interacting with He4(1S) as a buffer gas, at relative temperatures ranging from 1 K down to millikelvins, is described by accurate close coupling scattering calculations on an ab initio potential energy surface. The efficiency of the process is quantitatively analyzed by employing the ab initio quenching rates and cross sections and effective decay rate values are obtained from simple unimolecular kinetics over a broad range of trap conditions. © 2011 American Physical Society.

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