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Related Experiment Video

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Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

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Quantum interference in H + HD → H₂ + D between direct abstraction and roaming insertion pathways.

Yurun Xie^1,2, Hailin Zhao¹, Yufeng Wang¹

¹State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.

Science (New York, N.Y.)

|May 16, 2020

Summary

This summary is machine-generated.

Quantum interference in the H + HD reaction reveals distinct pathways. This study highlights quantum interference effects influencing chemical reaction dynamics and probing geometric phase effects.

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Area of Science:

Chemical dynamics
Quantum mechanics
Physical chemistry

Background:

Quantum interference is crucial for understanding chemical reaction dynamics.
Topologically distinct pathways can lead to complex reaction outcomes.

Purpose of the Study:

To investigate quantum interference between two distinct reaction pathways in the H + HD → H₂ + D reaction.
To analyze the energy dependence of the differential cross section for specific product states.

Main Methods:

Collision energy range: 1.94–2.21 eV.
Observation of oscillations in the energy dependence of the differential cross section for H₂ (v'=2, j'=3) product in the backward scattering direction.

Main Results:

Observed oscillations attributed to quantum interference between direct abstraction and roaming insertion pathways.
Interference patterns sensitive to the geometric phase effect below the conical intersection.

Conclusions:

Demonstrates the quantum nature of chemical reactivity.
Highlights the role of quantum interference in probing subtle effects like geometric phase.