Warm dense matter

Optical and transport properties

Post-Image

Figure 1: Electrical (left) and thermal (right) conductivity of hydrogen as a function of temperature. From Lambert et al. Phys. Plasmas 18, 056306 (2011)

Optical and transport properties

Optical and transport properties are key properties of matter that are needed as input for the simulation of matter at the macroscopic scale. For instance, the electronic thermal conductivity is of particular importance as it determines the heat transport and affects the growth of hydrodynamic instabilities in plasmas for instance in inertial confinement fusion applications. These properties are particularly challenging to measure experimentally in particular in extreme conditions such as in the warm dense matter regime. For this reason, a pulse power facility (EPP) is developed in our laboratory. This facility is able to generate matter in the WDM regime and measure precisely the electrical conductivity. Ab initio calculations based on density functional theory (DFT) are also performed using the ABINIT code to compute these properties comparing to experimental results and access regimes that cannot be reached experimentally.

Publications

  1. B. Jodar, L. Revello, J. Auperin, G. De Lachèze-Murel, A. Marizy, T. Géral, E. Lescoute, J.-M. Chevalier, C. Blancard, L. Videau, “A pulsed power facility for studying the warm dense matter regime”, Rev. Sci. Instrum., 95, 103526 (2024) DOI
  2. A. Blanchet, V. Recoules, F. Soubiran, M. Tacu, “Computation of transport properties of warm dense matter using Abinit”, Phys. Plasmas, 31, 062703 (2024) DOI
  3. N. Brouwer, V. Recoules, N. Holzwarth, M. Torrent, “Calculation of optical properties with spin-orbit coupling for warm dense matter”, Comp. Phys. Comm., 266, 108029 (2021) DOI
  4. B. Holst, V. Recoules, S. Mazevet, M. Torrent, A. Ng, Z. Chen, S. E. Kirkwood, V. Sametoglu, M. Reid and Y. Y. Tsui, Ab initio model of optical properties of two-temperature warm dense matter, Phys. Rev. B, 90, 035121 (2014) DOI
  5. F. Lambert, V. Recoules, A. Decoster, J. Clérouin and M. Desjarlais, On the transport coefficients of hydrogen in the inertial confinement fusion regime, Phys. Plasm., 18, 056306 (2011) DOI

Researchers involved

A. Blanchet, J. Boust, F. Brieuc, P. Dumas, A. Dewaele, A. Forestier, B. Jodar, L. Lecherbourg, P. Loubeyre, F. Occelli, C. Pépin, J-P. Perlat, V. Recoules, A. Sollier, F. Soubiran, L. Soulard, M. Tacu, M. Torrent, L. Videau, G. Weck