Calculate:
Current
Output
Format        Notes

Definition:

Equation

Parameters

Diagram

Field Emission of Electrons into
Vacuum:        top

Parameter

Value

Units

Special Values

Inputs:

E,
electric field

Volts/meterkilovolts/metermegavolts/meterVolts/cmkilovolts/cmmegavolts/cm_______________________

b,
enhancement factor

A,
stressed area

square meterssquare centimeterssquare
millimeterssquare micrometerssquare nanometerssquare angstrom
(ũsquare inchessquare feetsquare
milssquare yardssquare
milessquare kilometerssquare lightyears_______________________

F, work
function

electron-volt
(eV)joule (J)British thermal
unit (Btu){I.T.}calorie (cal){I.T.}ergfoot-pound (ft?lb)kilocalorie (kcal){Cal}kilowatt-hour
(kW?h)

Outputs:

I, current

ampskiloampsMegaampsmilliampsmicroampsnanoampspicoamps_______________________

v

t

y

Output
Format:
top

Select Format:

Scientific

Engineering

Fixed

Notes:
top

v(y) and t(y) are slowly
varying functions, which have often been approximated by a
constant (often=1).  See table
below.

Source:
Fowler-Nordheim and My dissertation at ODU (Appendix A).

y

v(y)

t(y)

y

v(y)

t(y)

0

1.0000

1.0000

0.55

0.6351

1.0502

0.05

0.9948

1.0011

0.60

0.5768

1.0565

0.10

0.9817

1.0036

0.65

0.5152

1.0631

0.15

0.9622

1.0070

0.70

0.4504

1.0697

0.20

0.9370

1.0111

0.75

0.3825

1.0765

0.25

0.9068

1.0157

0.80

0.3117

1.0832

0.30

0.8718

1.0207

0.85

0.2379

1.0900

0.35

0.8323

1.0262

0.90

0.1613

1.0969

0.40

0.7888

1.0319

0.95

0.0820

1.1037

0.45

0.7413

1.0378

1.00

0

1.1107

0.50

0.6900

1.0439

Copyright ?2002  Raymond J. Allen