Non-intuitive rotational reorientation in collisions of NO(A 2 Σ+ ) with Ne from direct measurement of a four-vector correlation

Nature Chemistry
Thomas R SharplesMatthew L Costen

Abstract

Stereodynamic descriptions of molecular collisions concern the angular correlations that exist between vector properties of the motion of the participating species, including their velocities and rotational angular momenta. Measurements of vector correlations provide a unique view of the forces acting during collisions, and are a stringent test of electronic-structure calculations of molecular interactions. Here, we present direct measurement of the four-vector correlation between initial and final relative velocities and rotational angular momenta in a molecular collision. This property, which quantifies the extent to which a molecule retains a memory of its initial sense of rotation, or handedness, as a function of scattering angle, yields insight into the dynamics of a molecular collision. We report non-intuitive changes in the handedness for specific states and scattering angles, reproduced by classical and quantum scattering calculations. Comparison to calculations on different ab initio potential energy surfaces demonstrates this measurement's exquisite sensitivity to the underlying intermolecular forces.

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Citations

May 28, 2019·Nature Chemistry·Cornelia G HeidF Javier Aoiz
Oct 3, 2020·Physical Chemistry Chemical Physics : PCCP·Cornelia G HeidMark Brouard
Jan 15, 2019·Physical Chemistry Chemical Physics : PCCP·P G JambrinaF J Aoiz
Sep 7, 2019·Physical Review Letters·Pablo G JambrinaF Javier Aoiz
Nov 15, 2020·The Journal of Chemical Physics·Masato Morita, Naduvalath Balakrishnan
Mar 17, 2021·The Journal of Chemical Physics·Masato MoritaNaduvalath Balakrishnan
Nov 17, 2020·The Journal of Physical Chemistry. a·Bikramaditya MandalDmitri Babikov
Sep 13, 2019·The Journal of Physical Chemistry. a·Victoria WalpoleMark Brouard
Dec 23, 2020·The Journal of Physical Chemistry Letters·Cornelia G HeidMark Brouard

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Methods Mentioned

BETA
circular dichroism

Software Mentioned

Hibridon

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