Observation of geometric phase effect through backward angular oscillations in the H + HD → H₂ + D reaction.

ABSTRACT: Quantum interference between reaction pathways around a conical intersection (CI) is an ultrasensitive probe of detailed chemical reaction dynamics. Yet, for the hydrogen exchange reaction, the difference between contributions of the two reaction pathways increases substantially as the energy decreases, making the experimental observation of interference features at low energy exceedingly challenging. We report in this paper a combined experimental and theoretical study on the H + HD → H₂ + D reaction at the collision energy of 1.72 eV. Although the roaming insertion pathway constitutes only a small fraction (0.088%) of the overall contribution, angular oscillatory patterns arising from the interference of reaction pathways were clearly observed in the backward scattering direct

SUBMITTER: Li S 

PROVIDER: S-EPMC11258225 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature