Kinetics and Dynamics of the S(^1D_2) + H_2 \to SH + H Reaction at Very Low Temperatures and Collision Energies

Abstract

We report combined studies on the prototypical S(^1D_2) + H2 insertion reaction. Kinetics and crossed-beam experiments are performed in experimental conditions approaching the cold energy regime, yielding absolute rate coefficients down to 5.8 K and relative integral cross sections to collision energies as low as 0.68 meV. They are supported by quantum calculations on a potential energy surface treating long range interactions accurately. All results are consistent and the excitation function behavior is explained in terms of the cumulative contribution of various partial waves.

References in corpus (1)

• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules

Cited by in corpus (18)

• Observation of Quantum Effects in sub Kelvin Cold Reactions
• Quantum-state resolved bimolecular collisions of velocity-controlled OH with NO radicals
• Elemental nitrogen partitioning in dense interstellar clouds
• A Moving Magnetic Trap Decelerator: a New Source for Cold Atoms and Molecules
• On the role of dynamical barriers in barrierless-reactions at low energies: S(${}^1$D) + H${}_2$
• Reaching the cold regime: S(^1D) + H_2 and the Role of Long-Range Interactions in Open Shell Reactive Collisions
• Molecular Collisions: from Near-cold to Ultra-cold
• The excitation function for Li+HF-->LiF+H at collision energies below 80 meV
• Ultracold atom-dimer long-range interactions beyond the $1/R^n$ expansion
• Design and Implementation of a New Apparatus for Astrochemistry: Kinetic Measurements of the CH + OCS Reaction and Frequency Comb Spectroscopy in a Cold Uniform Supersonic Flow
• Towards density and phase space compression of molecular gases in magneto-electrostatic traps
• Classification of resonance Regge trajectories and a modified Mulholland formula
• Universal behavior in complex-mediated reactions: Dynamics of S(1D)+ o-D2 --> D + SD at low collision energies
• Self-intersecting Regge trajectories in multi-channel scattering
• Long-range additive and nonadditive potentials in a hybrid system: Ground state atom, excited state atom, and ion
• Spin-Dependent Stereochemistry: A Non-adiabatic Quantum Dynamics Case Study of S + H2 -> SH + H Reaction
• Intense and controlled beam of S(${}^1{D}_2$) atoms
• A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures