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U.S. Department of Energy
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TAPERED DEFINING SLOT

Patent ·
OSTI ID:4192943
An improvement is reported in the shape and formation of the slot or opening in the collimating slot member which forms part of an ion source of the type wherein a vapor of the material to be ionized is bombarded by electrons in a magnetic field to strike an arc-producing ionization. The defining slot is formed so as to have a substantial taper away from the cathode, causing the electron bombardment from the cathode to be dispersed over a greater area reducing its temperature and at the same time bringing the principal concentration of heat from the electron bombardment nearer the anode side of the slot, thus reducing deterioration and prolonging the life of the slot member during operation.
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-14-006494
Assignee:
U.S. Atomic Energy Commission
Patent Number(s):
US 2903586
OSTI ID:
4192943
Country of Publication:
United States
Language:
English

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