Accession Number:

AD1061589

Title:

A New Fit to Secondary Emission Yield in the Low Impact Voltage Regime: An Improvement of Vaughan's Expression (Postprint)

Descriptive Note:

Journal Article - Open Access

Corporate Author:

University of Cincinnati Cincinnati United States

Report Date:

2018-08-16

Pagination or Media Count:

13.0

Abstract:

Reducing the emission of secondary electrons from materials is critical to improved efficiency and increased performance in high power vacuum electronics. A new mathematical expression for the secondary emission yield SEY as a function of the impact voltage up to a maximum of 5 kilovolts is proposed which is an extension of a formula first suggested by Vaughan. The new analytical fit and Vaughans fit are compared with SEY experimental data reported by others and measured by our group. The new analytical expression gives good fits to SEY experimental data in all cases, even when the SEY maximum is either slightly larger or below unity, two situations for which Vaughans fit is either inadequate or inapplicable.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE