Accession Number:

ADA102861

Title:

Thermionic Emission and Space-Charge Theory.

Descriptive Note:

Final rept. 1 Oct 76-30 Dec 80,

Corporate Author:

AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1981-05-01

Pagination or Media Count:

100.0

Abstract:

The work presented in this report extends the space-charge theory of parallel-plane diodes in several ways. Space-charge effects are included in the accelerating field range to remove the incompatibility between Langmuir theory and Schottky theory. A method is developed to use a measurement of the current density at the exponential point to calculate the zero field current density of the cathode. This is done without the necessity of matching data to a family of curves. A number of properties of Langmuir space-charge theory is described in much greater detail than has previously been done through the use of functional notation to express the current density as a function of the applied voltage. Some of these details are brought out in a discussion of the fields and charge in the interelectrode space. As a side light, a method is developed to handle the edge effects in a class of parallel-plane diode testers. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE