A novel circuit for independent control of electron energy and emission current of a hot cathode electron source

Jaroslaw Sikora; Stanislaw Halas

doi:10.1002/rcm.4915

A novel circuit for independent control of electron energy and emission current of a hot cathode electron source

Rapid Commun Mass Spectrom. 2011 Mar 30;25(6):689-92. doi: 10.1002/rcm.4915.

Authors

Jaroslaw Sikora¹, Stanislaw Halas

Affiliation

¹ Lublin University of Technology, Department of Automatics and Metrology, Lublin, Poland.

PMID: 21337629
DOI: 10.1002/rcm.4915

Abstract

The implementation of a non-linear combination of two reference voltages to control the anode voltage in the previously described biasing system of an electron source with a hot cathode allows elimination of the correlation between the emission current and the accelerating voltage. The presented system is highly suitable for applications in electron-impact mass spectrometers, ionization gauges and other instruments (for example, electron microscopes).