AI Article Synopsis
- Attosecond chronoscopy is crucial for understanding how electrons behave in various materials with extremely high temporal resolution.
- Researchers developed a new technique to analyze individual partial waves during photoionization in rare gas atoms, allowing them to measure the influence of each wave.
- Their experimental results, supported by simulations, enhance our understanding of photoelectron emission dynamics and could lead to advancements in attosecond optical timing technologies.
Article Abstract
Attosecond chronoscopy is central to the understanding of ultrafast electron dynamics in matter from gas to the condensed phase with attosecond temporal resolution. It has, however, not yet been possible to determine the timing of individual partial waves, and steering their contribution has been a substantial challenge. Here, we develop a polarization-skewed attosecond chronoscopy serving as a partial wave meter to reveal the role of each partial wave from the angle-resolved photoionization phase shifts in rare gas atoms. We steer the relative ratio between different partial waves and realize a magnetic-sublevel-resolved atomic phase shift measurement. Our experimental observations are well supported by time-dependent R-matrix numerical simulations and analytical soft-photon approximation analysis. The symmetry-resolved, partial-wave analysis identifies the transition rate and phase shift property in the attosecond photoelectron emission dynamics. Our findings provide critical insights into the ubiquitous attosecond optical timer and the underlying attosecond photoionization dynamics.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9424306 | PMC |
| http://dx.doi.org/10.1038/s41467-022-32753-8 | DOI Listing |
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