4.6 Article

Bayesian inferences of electrical current delivered to shocked transmission lines

Journal

JOURNAL OF APPLIED PHYSICS
Volume 134, Issue 15, Pages -

Publisher

AIP Publishing
DOI: 10.1063/5.0168420

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This passage introduces a more general Bayesian method capable of inferring current despite the presence of shocks, and provides uncertainty estimates and applications of the technique on experimental data.
Small radius Bdot measurements of electrical current delivered by pulsed power devices are routinely compromised by electrode/convolute plasmas endemic to multiterawatt transmission lines. Inferences of delivered current unaffected by these issues have recently been obtained by numerically optimizing consistency between model predictions and local experimental velocimetry data, but these are only unique for shockless velocity profiles. Here, we describe a more general Bayesian method capable of inferring current despite the presence of shocks. Additionally, we describe uncertainty estimates and use of the technique on experimental data. This technique is the first to provide uncertainty estimates on the full current trace delivered to an inertial confinement fusion target.

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