Kinetic modeling of plume-shockwave interactions during laser-produced plasma expansion in background gas

Authors

  • Rommil B. Emperado ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Myles Allen H. Zosa ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Lean L. Dasallas ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
  • Wilson O. Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We explore the effects of shockwave formation on the expansion of laser-produced plasmas (LPP) using the direct simulation Monte Carlo (DSMC) method. We have shown that the huge number of collisions within the initial plume drives the forward-directed expansion, and the background gas slows down the plume as it approaches the target. The shock front formation within the plume and background gas agrees with literature on experimental LPP expansion. Furthermore, we discuss the increased density and distorted shape of the plume as it collides with the argon shock front that is reflected from the substrate. The plume deceleration and distortion due to shockwave collision have potential applications in laser breakdown spectroscopy and nanoparticle fabrication.

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Article ID

SPP-2024-3C-02

Section

Optics and Photonics

Published

2024-06-27

How to Cite

[1]
RB Emperado, MAH Zosa, LL Dasallas, and WO Garcia, Kinetic modeling of plume-shockwave interactions during laser-produced plasma expansion in background gas, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-3C-02 (2024). URL: https://proceedings.spp-online.org/article/view/SPP-2024-3C-02.