Accession Number : AD1012268


Title :   Energy Flow in Dense Off-Equilibrium Plasma


Descriptive Note : Technical Report,01 Apr 2012,30 Jun 2016


Corporate Author : University of California, Los Angeles Los Angeles United States


Personal Author(s) : Putterman,Seth ; Bataller,Alex ; Koulakis,John ; Pree,Seth ; Latshaw,Alexandra


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1012268.pdf


Report Date : 15 Jul 2016


Pagination or Media Count : 155


Abstract : We created wann, dense plasmas with sonoluminescence, laser breakdown, and sparks - very different systems that all produce plasmas with a similar thermodynamic state. Probing sonoluminescence with visible-wavelength lasers yielded measurements of ionization potential lowering and collision times in dense plasmas, allowing us to distinguish between competing dense-plasma models. Hydrodynamic analysis of shockwaves generated by sparks yielded similar measurements in a different, more accessible system. Ultra-fast observations of laser breakdown have revealed a new phase of off-equilibrium plasma that has a tensile strength similar to a liquid, and reduced ion-electron collision cross-sections. By working at micron length scales, and nanosecond time scales, we are able to use table-top experiments to elucidate the properties of these exotic plasmas.


Descriptors :   sparks , shock waves , Plasmas (Physics) , energy


Distribution Statement : APPROVED FOR PUBLIC RELEASE