Injection of electron beams into two laser wakefields and generation of electron rings

Authors

Q. Chen, University of Nebraska-Lincoln
Dominika Maslarova, Institute of Plasma Physics of the Czech Academy of Sciences, Czech Technical University in Prague
J. Wang, University of Nebraska-Lincoln
S. Li, University of Nebraska-Lincoln
Donald Umstadter, University of Nebraska-LincolnFollow

Date of this Version

11-4-2022

Citation

PHYSICAL REVIEW E 106, 055202 (2022). DOI: 10.1103/PhysRevE.106.055202

Comments

Used by permission.

Abstract

Mutual injection of electron beams into two laser plasma wakefields was observed experimentally when driving laser pulses interfered in plasma at a small crossing angle and were slightly relatively delayed, approximately by one pulse duration. Particle-in-cell simulations revealed that the mutual injection was sensitive to the spatial overlap of the laser pulses, which therefore could be used to control the mutual injection. The dual synchronized, femtosecond electron beams are potentially useful for pump-probe experiments in ultrafast science. In addition, out-of-axis ring-shaped electron beams were detected in both experiments and simulations.