ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The Dudnikov type Penning source has been operated successfully with low work function LaB6 cathodes in a cesium-free discharge. It is found that the extracted H− current density is comparable to that of the cesium-mode operation and H− current density of 350 mA/cm2 have been obtained for an arc current of 55 A. Discharge current as high as 100 A has also been achieved for short pulse durations. The H− yield is closely related to the source geometry and the applied magnetic field. Experimental results demonstrate that the majority of the H− ions extracted are formed by volume processes in this type of source operation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1139313
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