Bibliographic Citation
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| DOI | 10.1063/1.871426 |
| Title | Active core profile and transport modification by application of ion Bernstein wave power in the Princeton Beta Experiment-Modification |
| Creator/Author | LeBlanc, B. ; Batha, S. ; Bell, R. ; Bernabei, S. ; Blush, L. ; de la Luna, E. ; Doerner, R. ; Dunlap, J. ; England, A. ; Garcia, I. ; Ignat, D. ; Isler, R. ; Jones, S. ; Kaita, R. ; Kaye, S. ; Kugel, H. ; Levinton, F. ; Luckhardt, S. ; Mutoh, T. ; Okabayashi, M. ; Ono, M. ; Paoletti, F. ; Paul, S. ; Petravich, G. ; Post-Zwicker, A. ; Sauthoff, N. ; Schmitz, L. ; Sesnic, S. ; Takahashi, H. ; Talvard, M. ; Tighe, W. ; Tynan, G. ; von Goeler, S. ; Woskov, P. ; Zolfaghari, A. (Princeton University, Plasma Physics Laboratory, Forrestal Campus, P.O. Box 451, Princeton, New Jersey 08543 (United States)) |
| Publication Date | 1995 Mar 01 |
| OSTI Identifier | OSTI ID: 6576644 |
| DOE Contract Number | AC02-76CH03073 |
| Other Number(s) | Journal ID: ISSN 1070-664X; CODEN: PHPAEN |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Physics of Plasmas; (United States); Journal Volume: 2:3 |
| Subject | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; BERNSTEIN MODE; BOOTSTRAP CURRENT; MAGNETIC CONFINEMENT; PLASMA HEATING; PLASMA PRESSURE; RADIOWAVE RADIATION; RESONANCE; CLOSED PLASMA DEVICES; CONFINEMENT; CURRENTS; ELECTRIC CURRENTS; ELECTROMAGNETIC RADIATION; HEATING; OSCILLATION MODES; PLASMA CONFINEMENT; RADIATIONS; THERMONUCLEAR DEVICES |
| Description/Abstract | Application of Ion Bernstein Wave Heating (IBWH) into the Princeton Beta Experiment-Modification (PBX-M) [Phys. Fluids B [bold 2], 1271 (1990)] tokamak stabilizes sawtooth oscillations and generates peaked density profiles. A transport barrier, spatially correlated with the IBWH power deposition profile, is observed in the core of IBWH-assisted neutral beam injection (NBI) discharges. A precursor to the fully developed barrier is seen in the soft x-ray data during edge localized mode (ELM) activity. Sustained IBWH operation is conducive to a regime where the barrier supports large [del][ital n][sub [ital e]], [del][ital T][sub [ital e]], [del][nu][sub [phi]], and [del][ital T][sub [ital i]], delimiting the confinement zone. This regime is reminiscent of the H(high) mode, but with a confinement zone moved inward. The core region has better than H-mode confinement while the peripheral region is L(low)-mode-like. The peaked profile enhances NBI core deposition and increases nuclear reactivity. An increase in central [ital T][sub [ital i]] results from [chi][sub [ital i]] reduction (compared to the H mode) and better beam penetration. Bootstrap current fractions of up to 0.32--0.35 locally and 0.28 overall were obtained when an additional NBI burst is applied to this plasma. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 741-751 |
| System Entry Date | 2008 Sep 11 |
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Last Updated: 11/19/2009