Physics Department Colloquia |
Events During the Week of February 2nd through February 9th, 2020
Monday, February 3rd, 2020
- No events scheduled
Tuesday, February 4th, 2020
- No events scheduled
Wednesday, February 5th, 2020
- No events scheduled
Thursday, February 6th, 2020
- No events scheduled
Friday, February 7th, 2020
- Is This Even a Plasma? Physics of Strongly Coupled Plasmas
- Time: 3:30 pm
- Place: 2241 Chamberlin Hall
- Speaker: Scott Baalrud, University of Iowa
- Abstract: Plasma is often described as an ionized gas. However, a rapidly growing field of research is concerned with strongly coupled states of plasma that are more akin to ionized liquids, solids, or supercritical fluids. Strongly coupled plasmas are found in nature, including the interior of giant planets, the core of stars, and even in lightning bolts. The recent surge of interest has been driven by the advent of high-intensity lasers capable of ionizing, heating and compressing materials to tens of thousands of degrees at near solid density or several times compressed. These dense plasmas are not well described by either the methods of condensed matter theory (which deals with lower temperatures) or plasma theory (which deals with lower densities). Unique properties of this warm dense state of matter arise due to the combined influence of strong correlations amongst ions and Fermi degeneracy of electrons. This talk will present a new approach to kinetic theory that has made it practical to describe the dynamical transport properties of dense strongly coupled plasmas. It will also show how we have used simulations enabled by state-of-the-art high-performance computing to validate this theory.
- Host: John Sarff