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Evaluation of quantum offset in velocity imaging-based electron spectrometry
Rui Zhang1, Shuaiting Yan1, Wenru Jie1
1Department of Physics, State Key Laboratory of Low Dimensional Quantum Physics, Frontier Science Center for Quantum Information, Tsinghua University, Beijing 100084, China.
The Journal of Chemical Physics
|May 4, 2026
Summary
This study investigates a claimed quantum offset in electron spectrometry. Simulations and experiments show no evidence for this offset in velocity imaging analysis.
Area of Science:
- Chemical Physics
- Quantum Mechanics
Background:
- Velocity-map imaging is crucial for chemical physics.
- A recent study claimed a 0.2 cm⁻¹ quantum offset in velocity imaging-based electron spectrometry.
Purpose of the Study:
- To experimentally and computationally assess the claimed quantum offset.
- To validate or refute the existence of the offset in electron spectrometry.
Main Methods:
- Simulations using the maximum entropy velocity Legendre reconstruction method.
- Experimental measurements of oxygen's electron affinity at varying voltages.
Main Results:
- Simulations showed no quantum offset in reconstructed velocity imaging data.
- Experimental data revealed no discernible offset attributable to electric fields.
Conclusions:
- There is no evidence supporting the claimed quantum offset in velocity imaging-based electron spectrometry.
- Proper analysis of velocity imaging data does not yield the reported offset.
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