CHESS Seminar Series: "Tackling Plasma Inverse Problems with some New Approaches"

Noon November 15, 2021

Virtual
https://illinois.zoom.us/j/83880018731?pwd=djRmdTdYZnBJVUhHMkNVYmtLYTlIQT09

Abstract

Hitting parametric electron energy distribution functions (EEDFs) using spectra is fairly common practice, while tackling more generic EEDFs typically involves other diagnostics, but these are not always available. I will discuss techniques to handle more generic EEDFs for spectral diagnostics with heavy emphasis on kernel-embedding of conditional distributions. I will also discuss some work in progress on inferring static, collisional-radiative parameters using timevarying EEDFs, and other time-dependent scenarios.

Biography

Hal Cambier obtained his Physics PhD at UCSC on developing and testing models for unusual time-dependent behaviors in astrophysical accretion flows. Through an NRC postdoc he worked for the Air Force Research Laboratory on diode-pumped alkalivapor lasers, developing and testing a kinetics model that captured non-Maxwellian electrons' effects on the system. He continued working on plasma physics for the In-Space Propulsion branch of AFRL, with increased emphasis on inference and model reduction aspects.