ArticleNature communications2020
Transient lensing from a photoemitted electron gas imaged by ultrafast electron microscopy.
Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed, 22 citations in OpenAlex.
- Statistically elucidated responses from low-signal contrast mechanisms in ultrafast electron microscopy.Structural dynamics (Melville, N.Y.) · 2025Article
- Relativistic ultrafast electron diffraction at high repetition rates.Structural dynamics (Melville, N.Y.) · 2023Article
- Time-resolved transmission electron microscopy for nanoscale chemical dynamics.Nature reviews. Chemistry · 2023Review
- Charge Dynamics Electron Microscopy: Nanoscale Imaging of Femtosecond Plasma Dynamics.ACS nano · 2023Article
- Direct imaging of plasma waves using ultrafast electron microscopy.Structural dynamics (Melville, N.Y.) · 2020Article
- Characterization of a time-resolved electron microscope with a Schottky field emission gun.Structural dynamics (Melville, N.Y.) · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Understanding and controlling ultrafast charge carrier dynamics is of fundamental importance in diverse fields of (quantum) science and technology. Here, we create a three-dimensional hot electron gas through two-photon photoemission from a copper surface in vacuum. We employ an ultrafast electron microscope to record movies of the subsequent electron dynamics on the picosecond-nanosecond time scale. After a prompt Coulomb explosion, the subsequent dynamics is characterized by a rapid oblate-to-prolate shape transformation of the electron gas, and periodic and long-lived electron cyclotron oscillations inside the magnetic field of the objective lens. In this regime, the collective behavior of the oscillating electrons causes a transient, mean-field lensing effect and pronounced distortions in the images. We derive an analytical expression for the time-dependent focal length of the electron-gas lens, and perform numerical electron dynamics and probe image simulations to determine the role of Coulomb self-fields and image charges. This work inspires the visualization of cyclotron dynamics inside two-dimensional electron-gas materials and enables the elucidation of electron/plasma dynamics and properties that could benefit the development of high-brightness electron and X-ray sources.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.