Tables of equation-of-state, thermodynamic properties, and shock Hugoniot for hot dense fluid deuterium

TL;DR

This paper provides comprehensive computational tables for the equation-of-state, thermodynamic properties, and shock Hugoniot of hot dense fluid deuterium, using a new chemical model that accounts for high-density effects and aligns well with experimental data.

Contribution

It introduces a novel chemical model for deuterium that incorporates high-density effects and provides detailed tables and surface plots for various thermodynamic properties.

Findings

Hugoniot curve agrees with laser shock experiments

Deuterium exhibits higher compressibility than previous models

Tables cover wide density and temperature ranges

Abstract

We present computational results and tables of the equation-of-state, thermodynamic properties, and shock Hugoniot for hot dense fluid deuterium. The present results are generated using a recently developed chemical model that takes into account different high density effects such as Coulomb interactions among charged particles, partial degeneracy, and intensive short range hard core repulsion. Internal partition functions are evaluated in a statistical-mechanically consistent way implementing recent developments in the literature. The shock Hugoniot curve derived from the present tables is in reasonable overall agreement with the Hugoniot derived from the Nova-laser shock wave experiments on liquid deuterium, showing that deuterium has a significantly higher compressibility than predicted by the SESAME tables or by Path Integral Monte Carlo (PIMC) calculations. Computational results are presented as surface plots for the dissociated fraction, degree of ionization, pressure, and specific internal energy for densities ranging from 0.0001 to 40 g/cm3 and temperatures from 2000 to ~ 106 K. Tables for values of the above mentioned quantities in addition to the specific heat at constant pressure, cp, ratio of specific heats, cp/cv, sound speed and Hugoniot curve (for a specific initial state) are presented for practical use.