Accession Number : AD1026517


Title :   Collisional Thermalization in Strongly Coupled Ultracold Neutral Plasmas


Descriptive Note : Technical Report,01 May 2012,26 Jan 2017


Corporate Author : Rice University Houston United States


Personal Author(s) : Killian,Thomas C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1026517.pdf


Report Date : 25 Jan 2017


Pagination or Media Count : 16


Abstract : This project studies collisional phenomena such as thermalization and diffusion in strongly coupled plasmas. In strongly coupled plasmas, the Coulomb interaction energy per particle exceeds the thermal energy. This occurs in high-energy-density plasmas such as inertial confinement fusion experiments and in nature in the interiors of gas giant planets and the crusts of neutron stars. Classical plasma theory breaks down in strongly coupled systems because of the non-perturbative nature of particle interactions. Improving our understanding of this regime is an important fundamental challenge and it is necessary for modelling plasmas in this regime. We perform our experiments in ultracold neutral plasmas, which are formed by photoionizing laser cooled atoms. These are the coldest neutral plasmas every created, and they allow us to study physics of strongly coupled plasmas in a controlled, well-diagnosed environment.


Descriptors :   complex systems , laser cooling , molecular dynamics simulations , plasma oscillation , phase transformations , diffusion , high energy , oscillation , plasma diagnostics , PLASMAS (PHYSICS) , high energy


Subject Categories : Plasma Physics and Magnetohydrodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE