ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The long-life version of a Bernas ion source is developed. It is called a Bernas-type electron active reflection (BEAR) ion source. The ion source has independently potential controlled reflectors, which are isolated from both an arc chamber and a filament. The potential of the reflectors is over 30 V negative with respect to the cathode potential. Because this potential can reflect enough emission electrons from the filament, the plasma production efficiency can be increased. In this method, we can minimize the arc voltage or a filament current compared with a conventional-type Bernas ion source, resulting in the reduction of a tungsten filament. Overall, the decrease in the filament diameter in the BEAR source was experimentally found to be below 50% of the conventional-type Bernas ion source. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1430874
