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Title: TAPERED DEFINING SLOT

Abstract

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.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4192943
Patent Number(s):
2903586
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-14-006494
NSA Number:
NSA-14-006494
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; ANODES; CATHODES; CONFIGURATION; EFFICIENCY; ELECTRIC ARCS; ELECTRON BEAMS; ION SOURCES; IONIZATION; IRRADIATION; LENSES; MAGNETIC FIELDS; OPERATION; PLANNING; TEMPERATURE; VAPORS

Citation Formats

Pressey, F.W. TAPERED DEFINING SLOT. United States: N. p., 1959. Web.
Pressey, F.W. TAPERED DEFINING SLOT. United States.
Pressey, F.W. Tue . "TAPERED DEFINING SLOT". United States.
@article{osti_4192943,
title = {TAPERED DEFINING SLOT},
author = {Pressey, F.W.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {9}
}