Call for experimental test of a revised mathematical form for empirical field emission current-voltage characteristics
There are now good theoretical reasons to believe that experimental current-voltage (i-V) relationships for cold field electron emission (CFE) should approximately obey the empirical law i =CVκexp(-B/V), where B, C, and κ are effectively constant, and κ ≠2. Since -dlni/d(1/V)=(V2/i)di/dV=B+κV, κ for a given emission situation could be experimentally established from an appropriate data plot if sufficiently accurate current-voltage measurements were available. Knowledge of experimental κ values could lead to greater physical understanding of CFE and variations as between materials. It is strongly urged that the feasibility of measurements of this kind be carefully explored.