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Title: Means for obtaining a metal ion beam from a heavy-ion cyclotron source

Abstract

A description is given of a modification to a cyclotron ion source used in producing a high intensity metal ion beam. A small amount of an inert support gas maintains the usual plasma arc, except that it is necessary for the support gas to have a heavy mass, e.g., xenon or krypton as opposed to neon. A plate, fabricated from the metal (or anything that can be sputtered) to be ionized, is mounted on the back wall of the ion source arc chamber and is bombarded by returning energetic low-charged gas ions that fail to cross the initial accelerating gap between the ion source and the accelerating electrode. Some of the atoms that are dislodged from the plate by the returning gas ions become ionized and are extracted as a useful beam of heavy ions. (auth)

Inventors:
;
Issue Date:
OSTI Identifier:
4124008
Patent Number(s):
3898496
Assignee:
to U.S. Energy Research and Development Administration
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
NSA Number:
NSA-33-009971
Resource Type:
Patent
Resource Relation:
Patent File Date: 1974 Aug 12; Other Information: H01J61/06; H01J61/16. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N54300* -Particle Accelerators-Ion Sources, Injection & Extraction; 430301* -Particle Accelerators-Auxiliaries & Components- Ion Sources; *CYCLOTRONS- ION SOURCES; *ION SOURCES- DESIGN; HEAVY IONS; IONIZED GASES; KRYPTON; METALS; PLATES; XENON

Citation Formats

Hudson, E D, and Mallory, M L. Means for obtaining a metal ion beam from a heavy-ion cyclotron source. United States: N. p., 1975. Web.
Hudson, E D, & Mallory, M L. Means for obtaining a metal ion beam from a heavy-ion cyclotron source. United States.
Hudson, E D, and Mallory, M L. Fri . "Means for obtaining a metal ion beam from a heavy-ion cyclotron source". United States.
@article{osti_4124008,
title = {Means for obtaining a metal ion beam from a heavy-ion cyclotron source},
author = {Hudson, E D and Mallory, M L},
abstractNote = {A description is given of a modification to a cyclotron ion source used in producing a high intensity metal ion beam. A small amount of an inert support gas maintains the usual plasma arc, except that it is necessary for the support gas to have a heavy mass, e.g., xenon or krypton as opposed to neon. A plate, fabricated from the metal (or anything that can be sputtered) to be ionized, is mounted on the back wall of the ion source arc chamber and is bombarded by returning energetic low-charged gas ions that fail to cross the initial accelerating gap between the ion source and the accelerating electrode. Some of the atoms that are dislodged from the plate by the returning gas ions become ionized and are extracted as a useful beam of heavy ions. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {8}
}