1.
Rev Sci Instrum
; 91(3): 033303, 2020 Mar 01.
Article
in English
| MEDLINE
| ID: mdl-32259940
ABSTRACT
We describe a plasma-cathode electron beam source based on a hollow-cathode discharge that is capable of generating a 9 kW dc electron beam at an accelerating voltage of 20 kV, with helium as a working gas at a pressure of 30 Pa. A test run of â¼50 operational hours did not indicate any significant degradation of the electron source extraction system or other structural components, and we estimate the operational lifetime of the source at about 100-120 h.