Enhanced hard X-ray emission from femtosecond laser irradiated microdroplets

2004/01/08 by M. Anand, Anand, M., A. S. Sandhu +9
Engineering · Physics and Astronomy · #FOS: Physical sciences #Laser Material Processing Techniques #Laser-Ablation Synthesis of Nanoparticles #Laser-induced spectroscopy and plasma #Optics (physics.optics) #Plasma Physics (physics.plasm-ph) #physics.optics #physics.plasm-ph

paper · pdf · doi:10.48550/arxiv.physics/0401024

4 pages including 4 figures

openalex publication_date 2004/01/08 · arxiv created 2005/08/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We make a comparative study of hard x-ray emission from 15 μm methanol microdroplets and a plain slab target of similar atomic composition at similar laser intensities. The hard X-ray yield from droplet plasmas is ≃ 35 times more than that obtained from solid plasmas. A prepulse that is about 10ns and about 5% of the main pulse is essential for hard x-ray generation from the droplets. A hot electron temperature of 36 keV is measured from the droplets at 8×10¹⁴ W cm^-2; three times higher intensity is needed to obtain similar hot electron temperature from solid plasmas with similar composition. We use 1D PIC simulation to obtain qualitative correlation to the experimental observations.

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