Benchmarking the effective one-component plasma model for warm dense neon and krypton within quantum molecular...

Area of Science:

• Plasma physics
• Condensed matter physics
• Computational physics

Background:

• The effective one-component plasma (EOCP) model is a valuable tool for calculating thermophysical properties of hot dense matter.
• Warm dense matter (WDM) presents unique challenges due to its extreme density and temperature conditions.

Purpose of the Study:

• To evaluate the accuracy of the EOCP and Yukawa models for describing neon and krypton in the WDM regime.
• To determine the equations of state, ionic structures, and transport properties of neon and krypton under WDM conditions.

Main Methods:

• Extensive quantum molecular dynamics (QMD) simulations were performed.
• Simulated data were used to benchmark the EOCP and Yukawa models.
• Analysis included diffusion and viscosity coefficients, and Stokes-Einstein relationships.

Main Results:

• The EOCP model accurately reproduces diffusion and viscosity coefficients for neon and krypton in the WDM regime.
• The Yukawa model requires consideration of energy level broadening for accurate predictions.
• A practical formula for the effective coupling parameter dependent on density and temperature was derived.

Conclusions:

• The EOCP model is a promising and computationally efficient approach for predicting transport behaviors in WDM.
• The study highlights the limitations of the Yukawa model and the necessity of incorporating specific physical effects.
• Results provide valuable data for future research on dense neon and krypton and the general understanding of ionic transport in dense plasmas.