Bochum 2015 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

P: Fachverband Plasmaphysik

P 20: Laser Plasmas I

P 20.1: Hauptvortrag

Mittwoch, 4. März 2015, 14:00–14:30, HZO 30

Non-equilibrium Warm Dense Matter — •Andrew Ng — Department of Physics & Astronomy, University of British Columbia, Vancouver, Canada

Warm Dense Matter (WDM) refers to states in which the electron temperature is comparable to the Fermi energy and the ion potential energy exceeds their kinetic energy. Such states are governed by the complex interplay between electron degeneracy, excited electronic states and strong ion-ion coupling. Since its introduction in 1999 and the first International Workshop on Warm Dense Matter in 2000, WDM has emerged as a new frontier in plasma and condensed matter physics, attracting interest in broad disciplines including matter under extreme conditions, laser ablation, inertial confinement fusion, and planetary physics. While theoretical studies of WDM are challenging, experiments are equally daunting. With high energy densities, WDM cannot be readily confined in the laboratory. In unconfined states, gradients of temperature and density would develop rapidly and measurements can only be interpreted via complex numerical simulations. Advance in WDM science hinges on our ability to measure physical properties of uniform states. Currently, there are two primary approaches, namely, shock compression and isochoric heating of solids. In this talk, I will review the study of femtosecond-laser heated gold that is driving our understanding of non-equilibrium Warm Dense Matter physics related to lattice stability, high-energy-density solid phase, electron-ion coupling and electron kinetics.