Test particle transport in perturbed magnetic fields in tokamaks

被引：25

作者：

de Rover, M ^{[1
]}

Schilham, AMR ^{[1
]}

Montvai, A ^{[1
]}

Cardozo, NJL ^{[1
]}

机构：

[1] EURATOM, FOM, Inst Plasmafys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands

来源：

PHYSICS OF PLASMAS | 1999年 / 6卷 / 06期

关键词：

D O I：

10.1063/1.873516

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Numerical calculations of magnetic field line trajectories in a tokamak are used to investigate the common hypotheses that (i) field lines in a chaotic field make a Gaussian random walk and (ii) that the poloidal component of the magnetic field is uniform in regions with a chaotic magnetic field. Both hypotheses are found invalid in typical tokamak conditions. A test particle transport model in the so-called "collisionless diffusion" limit is presented, based on the field line excursions in numerical simulations. Decorrelation mechanisms that effectively enhance the transport in a stochastic field are investigated. (C) 1999 American Institute of Physics. [S1070-664X(99)02406-4].

引用

页码：2443 / 2451

页数：9

共 23 条

[1]

Arnol'd VI, 1983, GEOMETRICAL METHODS

[2]

Balescu R., 1988, Transport processes in plasmas

[3] Magnetic turbulence and the transport of energy and particles in tokamaks [J].

Bickerton, RJ .

PLASMA PHYSICS AND CONTROLLED FUSION, 1997, 39 (03) :339-365

[4] Electron thermal transport in RTP: filaments, barriers and bifurcations [J].

Cardozo, NJL ;

Hogeweij, GMD ;

de Baar, M ;

Barth, CJ ;

Beurskens, MNA ;

De Luca, F ;

Donne, AJH ;

Galli, P ;

van Gelder, JFM ;

Gorini, G ;

de Groot, B ;

Jacchia, A ;

Karelse, FA ;

de Kloe, J ;

Kruijt, OG ;

Lok, J ;

Mantica, P ;

van der Meiden, HJ ;

Oomens, AAM ;

Oyevaar, T ;

Pijper, FJ ;

Polman, RW ;

Salzedas, F ;

Schuller, FC ;

Westerhof, E .

PLASMA PHYSICS AND CONTROLLED FUSION, 1997, 39 :B303-B316

[5] PLASMA FILAMENTATION IN THE RIJNHUIZEN-TOKAMAK RTP [J].

CARDOZO, NJL ;

SCHULLER, FC ;

BARTH, CJ ;

CHU, CC ;

PIJPER, FJ ;

LOK, J ;

OOMENS, AAM .

PHYSICAL REVIEW LETTERS, 1994, 73 (02) :256-259

[6] NONQUASILINEAR DIFFUSION FAR FROM THE CHAOTIC THRESHOLD [J].

CARY, JR ;

ESCANDE, DF ;

VERGA, AD .

PHYSICAL REVIEW LETTERS, 1990, 65 (25) :3132-3135

[7]

DEROVER M, 1996, THESIS EINDHOVEN U T

[8] Transport and performance in DIII-D discharges with weak or negative central magnetic shear [J].

Greenfield, CM ;

Schissel, DP ;

Stallard, BW ;

Lazarus, EA ;

Navratil, GA ;

Burrell, KH ;

Casper, TA ;

DeBoo, JC ;

Doyle, EJ ;

Fonck, RJ ;

Forest, CB ;

Gohil, P ;

Groebner, RJ ;

Jakubowski, M ;

Lao, LL ;

Murakami, M ;

Petty, CC ;

Rettig, CL ;

Rhodes, TL ;

Rice, BW ;

John, HES ;

Staebler, GM ;

Strait, EJ ;

Taylor, TS ;

Turnbull, AD ;

Tritz, KL ;

Waltz, RE .

PHYSICS OF PLASMAS, 1997, 4 (05) :1596-1604

[9] EFFECTIVE PLASMA HEAT-CONDUCTIVITY IN BRAIDED MAGNETIC-FIELD .1. QUASI-LINEAR LIMIT [J].

ISICHENKO, MB .

PLASMA PHYSICS AND CONTROLLED FUSION, 1991, 33 (07) :795-807

[10] ISLANDS OF RUNAWAY ELECTRONS IN THE TEXTOR TOKAMAK AND RELATION TO TRANSPORT IN A STOCHASTIC FIELD [J].

JASPERS, R ;

CARDOZO, NJL ;

FINKEN, KH ;

SCHOKKER, BC ;

MANK, G ;

FUCHS, G ;

SCHULLER, FC .

PHYSICAL REVIEW LETTERS, 1994, 72 (26) :4093-4096

← 1 2 3 →