2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105635Several parameterizations of tabulated values of the Nordheim function $\vartheta (y)$ and its complementary function $t(y)$ are proposed. The function $\vartheta (y)$ plays essential role in description of field emission.4 pages, 2 figuresMaterials ScienceOther Condensed MatterHigh Energy Physics - PhenomenologyAccelerator Physicstext