摘要:

An electron gun based on Steigerwald’s design is described. It is of particular interest in that large changes in the cathode to focus distance can be effected by changing the voltage on one electrode, which operates at moderate voltages with respect to the cathode.

ISSN:0034-6748    

DOI:10.1063/1.1134122

出版商:AIP    

年代:1975

数据来源: AIP