The May 2019 values of the field emission universal constants, and related matters

Abstract

Theories of electron and ion emission use various special universal constants defined as particular combinations of well-known fundamental constants. Following the May 2019 changes in the international system of measurement, this paper presents refreshed tabulations of: (a) the relevant fundamental constants, in both SI units and field emission customary units; and (b) universal constants used in field electron emission contexts, expressed in field emission customary units.