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Title Changes to the ion temperature profile during IBW heating in PBX-M
Creator/Author Tighe, W. ; Bell, R. ; Chu, T.K. ; Hermann, H. ; LeBlanc, B. ; Okabayashi, M. ; Ono, M. (Oak Ridge National Laboratory, Tennessee (United States)) ; Asakura, N. (Princeton University Plasma Physics Laboratory New Jersey (United States)) ; Cesario, R. (Jaeri (Japan)) ; England, A. ; Isler, R. (ENEA, Frascati (Italy)) ; Kaita, R. ; Kugel, H. ; Paul, S. (Oak Ridge National Laboratory, Tennessee (United States)) ; Post-Zwicker, A. (ENEA, Frascati (Italy)) Takahashi, H. (Oak Ridge National Laboratory, Tennessee (United States))
Publication Date1994 Oct 15
OSTI IdentifierOSTI ID: 7263117
Report Number(s)CONF-9304112--
DOE Contract NumberAC02-76CH03073
Other Number(s)Journal ID: ISSN 0094-243X; CODEN: APCPCS
Resource TypeConference
Specific TypeJournal Article
Resource RelationJournal Name: AIP Conference Proceedings (American Institute of Physics); (United States); Journal Volume: 289:1; Conference: 10. topical conference on radio frequency power in plasmas, Boston, MA (United States), 1-3 Apr 1993
Subject70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA HEATING; BERNSTEIN MODE; ELECTRON TEMPERATURE; ION CYCLOTRON-RESONANCE; ION PLASMA WAVES; ION TEMPERATURE; PBX DEVICES; CLOSED PLASMA DEVICES; CYCLOTRON RESONANCE; HEATING; ION WAVES; OSCILLATION MODES; PLASMA WAVES; RESONANCE; THERMONUCLEAR DEVICES; TOKAMAK DEVICES
Description/AbstractThe introduction of Ion Bernstein Wave Heating (IBWH) experiments in PBX-M have demonstrated significant bulk ion heating and ion temperature (T[sub i]) profile modification. T[sub i] profiles were obtained using a multi-channel, charge-exchange recombination spectroscopy system (the CHERS diagnostic). With IBWH, there are density increases; so to produce comparative discharges when no IBWH is present, additional gas must be injected. For [bar n][sub e], of [similar to]3[times]10[sup 13] cm[sup [minus]3], the central ion temperature, T[sub i0], was observed to increase by 350 eV when 0.6 MW of IBWH was applied for [similar to]300 msec. The product [bar n][sub e] T[sub i0], a measure of the ion stored energy, increases linearly with IBWH power. The T[sub i] profile broadened with IBWH and the ion temperature gradient steepened near the predicted power deposition layer, providing evidence of localized heating. Examination of [Delta]T[sub i] profile evolution indicated that the IBWH power was, in fact, deposited in a localized, off-axis region.
Country of PublicationUnited States
LanguageEnglish
FormatMedium: X; Size: Pages: 72-75
System Entry Date2008 Feb 12

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