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Title: COASTING ARC ION SOURCE

Abstract

An improved ion source is described and in particular a source in which the ions are efficiently removed. The plasma is generated in a tubular amode structure by the oscillation of electrons in an axial magnetic field, as in the Phillips Ion Gage. The novel aspect of the source is the expansion of the plasma as it leaves the anode structure, so as to reduce the ion density at the axis of the anode and present a uniform area of plasma to an extraction grid. The structure utilized in the present patent to expand the plasma comprises flange members of high permeability at the exitgrid end of the amode to diverge the magnetic field adjacent the exit.

Inventors:
Issue Date:
OSTI Identifier:
4341698
Patent Number(s):
2806161
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
NSA Number:
NSA-12-004627
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
PATENTS; ANODES; CONFIGURATION; ELECTRONS; ION SOURCES; MAGNETIC FIELDS; OSCILLATIONS; PATENT; PLASMA

Citation Formats

Foster, Jr, J S. COASTING ARC ION SOURCE. United States: N. p., 1957. Web.
Foster, Jr, J S. COASTING ARC ION SOURCE. United States.
Foster, Jr, J S. Tue . "COASTING ARC ION SOURCE". United States.
@article{osti_4341698,
title = {COASTING ARC ION SOURCE},
author = {Foster, Jr, J S},
abstractNote = {An improved ion source is described and in particular a source in which the ions are efficiently removed. The plasma is generated in a tubular amode structure by the oscillation of electrons in an axial magnetic field, as in the Phillips Ion Gage. The novel aspect of the source is the expansion of the plasma as it leaves the anode structure, so as to reduce the ion density at the axis of the anode and present a uniform area of plasma to an extraction grid. The structure utilized in the present patent to expand the plasma comprises flange members of high permeability at the exitgrid end of the amode to diverge the magnetic field adjacent the exit.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1957},
month = {9}
}