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

Abstract

Microwave injection methods are disclosed 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. 5 figs.

Inventors:
Issue Date:
Research Org.:
Lockheed Martin Energy Research Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321226
Patent Number(s):
5,841,237
Application Number:
PAN: 8-892,492; TRN: 99:003303
Assignee:
Lockheed Martin Energy Research Corp., Oak Ridge, TN (United States) PTO; SCA: 661220; PA: EDB-99:032503; SN: 99002058525
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 24 Nov 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; ECR ION SOURCES; MICROWAVE RADIATION; PLASMA PRODUCTION; HIGH-FREQUENCY HEATING; CHARGE STATES

Citation Formats

Alton, G.D. Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources. United States: N. p., 1998. Web.
Alton, G.D. Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources. United States.
Alton, G.D. Tue . "Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources". United States.
@article{osti_321226,
title = {Production of large resonant plasma volumes in microwave electron cyclotron resonance ion sources},
author = {Alton, G.D.},
abstractNote = {Microwave injection methods are disclosed 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. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {11}
}