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Title: Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources

Abstract

Microwave injection methods for enhancing the performance of existing electron cyclotron resonance (ECR) ion sources. The methods are based on the use of high-power diverse frequency microwaves, including variable-frequency, multiple-discrete-frequency, and broadband microwaves. The methods effect large resonant "volume" ECR regions in the ion sources. The creation of these large ECR plasma volumes permits coupling of more microwave power into the plasma, resulting in the heating of a much larger electron population to higher energies, the effect of which is to produce higher charge state distributions and much higher intensities within a particular charge state than possible in present ECR ion sources.

Inventors:
 [1]
  1. Kingston, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
871999
Patent Number(s):
5841237
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
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
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
production; resonant; plasma; volumes; microwave; electron; cyclotron; resonance; sources; injection; methods; enhancing; performance; existing; ecr; based; high-power; diverse; frequency; microwaves; including; variable-frequency; multiple-discrete-frequency; broadband; effect; volume; regions; creation; permits; coupling; power; resulting; heating; larger; population; energies; produce; charge; distributions; intensities; particular; ecr plasma; electron cyclotron; frequency microwave; microwave power; cyclotron resonance; plasma volume; microwave electron; /315/

Citation Formats

Alton, Gerald D. Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources. United States: N. p., 1998. Web.
Alton, Gerald D. Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources. United States.
Alton, Gerald D. Thu . "Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources". United States. https://www.osti.gov/servlets/purl/871999.
@article{osti_871999,
title = {Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources},
author = {Alton, Gerald D},
abstractNote = {Microwave injection methods for enhancing the performance of existing electron cyclotron resonance (ECR) ion sources. The methods are based on the use of high-power diverse frequency microwaves, including variable-frequency, multiple-discrete-frequency, and broadband microwaves. The methods effect large resonant "volume" ECR regions in the ion sources. The creation of these large ECR plasma volumes permits coupling of more microwave power into the plasma, resulting in the heating of a much larger electron population to higher energies, the effect of which is to produce higher charge state distributions and much higher intensities within a particular charge state than possible in present ECR ion sources.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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Works referenced in this record:

Design studies for an advanced ECR ion source
journal, April 1994