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

Report Date:

2016-07-15

Pagination or Media Count:

155.0

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.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE