2025/04/04 by Ratul Sabui, Sabui, Ratul, S. V. Rahul +10
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Laser-Plasma Interactions and Diagnostics #Particle Accelerators and Free-Electron Lasers #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2504.03217
openalex publication_date 2025/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report the generation of MeV temperature electrons using sub-terawatt laser systems with a liquid methanol jet as a target. Remarkably, even at laser intensities of 1016W/cm2, liquid cylindrical (2D) 15 micron methanol jets produce electrons with temperatures of 1 MeV. Hot electron emission characteristics are strikingly similar to those observed in spherical microdroplet (3D) targets. These results validate that modeling such experiments using 2D PIC simulation is not a compromising approximation. This work further simplifies the experimental complexities towards a multi-KHz highly regenerative source of directed multi-MeV electron (and associated x-ray and ion) generation, demanding laser intensities 100x lower than conventional laser plasma sources. Increased source energy and pointing stability are crucial for imaging or radiographic applications from such sources.