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Updated: Aug 30, 2025
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
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Atomic partial wave meter by attosecond coincidence metrology
Wenyu Jiang1, Gregory S J Armstrong2, Jihong Tong1
1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China.
Nature Communications
|August 29, 2022
Summary
This study introduces polarization-skewed attosecond chronoscopy to measure partial wave contributions in photoionization. This breakthrough allows precise control and measurement of electron dynamics with attosecond resolution.
Area of Science:
- Quantum dynamics
- Ultrafast spectroscopy
- Atomic physics
Background:
- Attosecond chronoscopy enables studying electron dynamics with attosecond resolution.
- Determining and controlling individual partial wave contributions in photoionization has been challenging.
Purpose of the Study:
- To develop a method for measuring partial wave contributions in photoionization.
- To steer the relative ratios of partial waves and measure magnetic-sublevel-resolved atomic phase shifts.
Main Methods:
- Development of polarization-skewed attosecond chronoscopy.
- Angle-resolved photoionization measurements in rare gas atoms.
- Time-dependent R-matrix numerical simulations and soft-photon approximation analysis.
Main Results:
- Demonstrated polarization-skewed attosecond chronoscopy as a partial wave meter.
- Successfully steered partial wave ratios and performed magnetic-sublevel-resolved phase shift measurements.
- Symmetry-resolved analysis revealed transition rates and phase shift properties in attosecond photoelectron emission.
Conclusions:
- The developed method provides critical insights into attosecond photoionization dynamics.
- Offers a new tool for understanding electron dynamics in matter.
- Advances the capabilities of attosecond chronoscopy for fundamental physics research.
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