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By Jeremy A. Riousset, Joshua S. Méndez Harper, Josef Dufek, Jared P. Nelson, Annelisa B. Esparza.

Primary research paper; classical planar Townsend criterion, empirical ionization coefficient and limits of its geometric assumptions. Full byline verified on the primary publisher page.

Publisher: agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JD038427 . The published five-author byline above differs from the earlier arXiv version, which also lists Jacob A. Engle; author contributions are reported in the published article.

Annelisa B. Esparza coauthored the generalized gas-discharge study, with investigation and data curation among the published contributions.^[ref] An Embry-Riddle research account also identifies her participation in planetary electrical-discharge research.^[ref]

A controlled test of a breakdown model would specify the gas, pressure, electrode shape and separation, then measure the electric potential difference at discharge onset. Altering electrode curvature while holding the gap width fixed isolates a geometric change that a planar approximation suppresses. Surface condition and the criterion used to identify onset must also be recorded. Consistent measurement definitions make datasets from different apparatus comparable.