Abstract
We report observations of coherent optical transition radiation interferometry (COTRI) patterns generated by microbunched electrons as they emerge from a laser-driven plasma accelerator. The divergence of the microbunched portion of electrons, deduced by comparison to a COTRI model, is smaller than the ensemble beam divergence, while the radius of the microbunched beam, obtained from COTR images on the same shot, is . The combined results show that the microbunched distribution has estimated transverse normalized emittance .
- Received 12 July 2019
- Revised 27 May 2020
- Accepted 9 June 2020
DOI:https://doi.org/10.1103/PhysRevLett.125.014801
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Published by the American Physical Society