STEADY-STATE CONVECTION AND FLUCTUATION-DRIVEN PARTICLE-TRANSPORT IN THE H-MODE TRANSITION

被引：104

作者：

TYNAN, GR

SCHMITZ, L

CONN, RW

DOERNER, R

LEHMER, R

机构：

[1] Institute for Plasma and Fusion Research, University of California, Los Angeles

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.68.3032

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Large-scale steady-state convection is found to dominate the particle transport just inside the last closed flux surface (LCFS) in Ohmic discharges in the CCT tokamak. Near the limiter radius and in the scrape-off layer, fluctuation-induced transport is prevalent. At the L-H transition, the convection pattern near the LCFS is disrupted and a more poloidally symmetric, near-sonic plasma flow develops. Convective and turbulent particle transport are reduced across the entire edge region, resulting in the formation of the H-mode edge transport barrier.

引用

页码：3032 / 3035

页数：4

共 21 条

[11] BROAD-BAND FLUCTUATIONS AND PARTICLE-TRANSPORT IN THE EDGE PLASMA DURING ECRH IN DITE [J].

MANTICA, P ;

VAYAKIS, G ;

HUGILL, J ;

CIRANT, S ;

PITTS, RA ;

MATTHEWS, GF .

NUCLEAR FUSION, 1991, 31 (09) :1649-1660

[12] EFFECTS OF AUXILIARY HEATING ON DC ELECTRIC-FIELDS IN THE TEXTOR BOUNDARY [J].

MOYER, RA ;

VANNIEUWENHOVE, R ;

VANOOST, G ;

BORA, D ;

CONN, RW ;

CONRADS, H ;

IVANOV, RS ;

LAUX, M ;

RUSBULDT, D ;

SCHORN, R ;

TELESCA, G ;

VANDENPLAS, P .

JOURNAL OF NUCLEAR MATERIALS, 1990, 176 :293-300

[13] INVESTIGATION OF THE SOL USING A MULTIELEMENT INSTRUMENTAL POLOIDAL LIMITER [J].

NEDOSPASOV, AV ;

BYCHKOV, SS ;

GAPONOV, VV ;

ZYKOVA, NM ;

IVANOV, RS ;

KABANOV, VN ;

NEKRYLOVA, JV ;

SAZONOV, AV ;

STOTSKY, GI .

JOURNAL OF NUCLEAR MATERIALS, 1990, 176 :169-173

[14] THE COLLISIONLESS MACROSCOPIC KELVIN-HELMHOLTZ INSTABILITY .1. TRANSVERSE ELECTROSTATIC MODE [J].

PRITCHETT, PL ;

CORONITI, FV .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1984, 89 (NA1) :168-178

[15] TURBULENT STRUCTURE IN THE EDGE PLASMA OF THE TEXT TOKAMAK [J].

RITZ, CP ;

BENGTSON, RD ;

LEVINSON, SJ ;

POWERS, EJ .

PHYSICS OF FLUIDS, 1984, 27 (12) :2956-2959

[16] EVIDENCE FOR CONFINEMENT IMPROVEMENT BY VELOCITY-SHEAR SUPPRESSION OF EDGE TURBULENCE [J].

RITZ, CP ;

LIN, H ;

RHODES, TL ;

WOOTTON, AJ .

PHYSICAL REVIEW LETTERS, 1990, 65 (20) :2543-2546

[17] H-MODE BEHAVIOR INDUCED BY CROSS-FIELD CURRENTS IN A TOKAMAK [J].

TAYLOR, RJ ;

BROWN, ML ;

FRIED, BD ;

GROTE, H ;

LIBERATI, JR ;

MORALES, GJ ;

PRIBYL, P ;

DARROW, D ;

ONO, M .

PHYSICAL REVIEW LETTERS, 1989, 63 (21) :2365-2368

[18]

TYNAN GR, 1991, THESIS U CALIFORNIA

[19] REGIME OF IMPROVED CONFINEMENT AND HIGH-BETA IN NEUTRAL-BEAM-HEATED DIVERTOR DISCHARGES OF THE ASDEX TOKAMAK [J].

WAGNER, F ;

BECKER, G ;

BEHRINGER, K ;

CAMPBELL, D ;

EBERHAGEN, A ;

ENGELHARDT, W ;

FUSSMANN, G ;

GEHRE, O ;

GERNHARDT, J ;

VONGIERKE, G ;

HAAS, G ;

HUANG, M ;

KARGER, F ;

KEILHACKER, M ;

KLUBER, O ;

KORNHERR, M ;

LACKNER, K ;

LISITANO, G ;

LISTER, GG ;

MAYER, HM ;

MEISEL, D ;

MULLER, ER ;

MURMANN, H ;

NIEDERMEYER, H ;

POSCHENRIEDER, W ;

RAPP, H ;

ROHR, H ;

SCHNEIDER, F ;

SILLER, G ;

SPETH, E ;

STABLER, A ;

STEUER, KH ;

VENUS, G ;

VOLLMER, O ;

YU, Z .

PHYSICAL REVIEW LETTERS, 1982, 49 (19) :1408-1412

[20]

WHITE RB, 1983, REV PLASMA PHYSICS, P664

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