Preprint
Plasma Seismology: Fully Exploiting the Information Contained in Velocity Space of Kinetic Plasmas using the Morrison G Transform
ArXiv.org
Cornell University
11/08/2024
DOI: 10.48550/arxiv.2411.05772
Abstract
Weakly collisional plasmas contain a wealth of information about the dynamics
of the plasma in the particle velocity distribution functions, yet our ability
to exploit fully that information remains relatively primitive. Here we aim to
present the fundamentals of a new technique denoted Plasma Seismology that aims
to invert the information from measurements of the particle velocity
distribution functions at a single point in space over time to enable the
determination of the electric field variation over an extended spatial region.
The fundamental mathematical tool at the heart of this technique is the
Morrison $G$ Transform. Using kinetic numerical simulations of Langmuir waves
in a Vlasov-Poisson plasma, we demonstrate the application of the standard
Morrison $G$ Transform, which uses measurements of the particle velocity
distribution function over all space at one time to predict the evolution of
the electric field in time. Next, we introduce a modified Morrison $G$
Transform which uses measurements of the particle velocity distribution
function at one point in space over time to determine the spatial variation of
the electric field over an extended spatial region. We discuss the limitations
of this approach, particularly for the numerically challenging case of Langmuir
waves. The application of this technique to Alfven waves in a magnetized plasma
holds the promise to apply the technique to existing spacecraft particle
measurement instrumentation to determine the electric fields over an extended
spatial region away from the spacecraft.
Details
- Title: Subtitle
- Plasma Seismology: Fully Exploiting the Information Contained in Velocity Space of Kinetic Plasmas using the Morrison G Transform
- Creators
- Frederick SkiffGregory G Howes
- Resource Type
- Preprint
- Publication Details
- ArXiv.org
- DOI
- 10.48550/arxiv.2411.05772
- ISSN
- 2331-8422
- Publisher
- Cornell University; Ithaca, New York
- Language
- English
- Date posted
- 11/08/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984747817302771
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