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American Physical Society, Physical Review Letters, 13(109)

DOI: 10.1103/physrevlett.109.133201

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Dynamics of theS(D21)+HD(j=0)Reaction at Collision Energies Approaching the Cold Regime: A Stringent Test for Theory

Journal article published in 2012 by Manuel Lara, Simon Chefdeville, Kevin M. Hickson ORCID, Astrid Bergeat ORCID, Christian Naulin, Jean-Michel Launay, Michel Costes
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We report integral cross sections for the S(1D2) + HD(j = 0) → DS + H and HS + D reaction channels obtained through crossed-beam experiments reaching collision energies as low as 0.46 meV and from adiabatic time-independent quantum-mechanical calculations. While good overall agreement with experiment at energies above 10 meV is observed, neither the product channel branching ratio nor the low-energy resonancelike features in the HS + D channel can be theoretically reproduced. A nonadiabatic treatment employing highly accurate singlet and triplet potential energy surfaces is clearly needed to resolve the complex nature of the reaction dynamics