N. Acharya

ORCID: 0000-0002-4533-6160
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About
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Research Areas
  • Laser-induced spectroscopy and plasma
  • Laser-Plasma Interactions and Diagnostics
  • Particle Dynamics in Fluid Flows

Energetics (United States)
2022-2025

University of Rochester
2022-2025

The evolution of non-uniform shocks produced by modulated laser irradiation or surface perturbations is relevant to studies inertial confinement fusion and material properties at high-energy-density conditions. We present results from an experiment conducted the OMEGA EP facility, where a 300 GPa shock was driven into fused silica sample with pre-fabricated single-mode modulations. Using time-resolved optical velocimetry, we captured continuous rippled motion, enabling comprehensive mapping...

10.1063/5.0254483 article EN cc-by-nc Journal of Applied Physics 2025-03-17

A laser-driven shock propagating through an isolated particle embedded in a plastic (CH) target was studied using the radiation-hydrodynamic code FLASH. Preliminary simulations IONMIX equations of state (EOS) showed significant differences Hugoniot aluminum compared to experimental data low-pressure regime [O(10) GPa], resulting higher streamwise compression and deformation particle. Hence, simple modification ideal gas EOS developed employed describe materials examine dynamics. The...

10.1063/5.0083076 article EN publisher-specific-oa Physics of Plasmas 2022-05-01
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