Role of the edge electric field in the resonant mode-particle interactions and the formation of transport barriers in toroidal plasmas

被引：4

作者：

Anastassiou, Giorgos ^{[1
]}

Zestanakis, Panagiotis ^{[1
]}

Antonenas, Yiannis ^{[1
]}

Viezzer, Eleonora ^{[2
]}

Kominis, Yannis ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Sch Appl Math & Phys Sci, Athens, Greece

[2] Univ Seville, Dept Atom Mol & Nucl Phys, Seville, Spain

来源：

JOURNAL OF PLASMA PHYSICS | 2024年 / 90卷 / 01期

基金：

欧洲研究理事会;

关键词：

fusion plasma; plasma dynamics; plasma nonlinear phenomena; H-MODE; POLOIDAL ROTATION; CONFINEMENT; ORBITS; SHEAR;

D O I：

10.1017/S0022377824000047

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：

The impact of an edge radial electric field on the particle orbits and the orbital spectrum in an axisymmetric toroidal magnetic equilibrium is investigated using a guiding centre canonical formalism. Poloidal and bounce/transit-averaged toroidal precession frequencies are calculated, highlighting the role of the radial electric field. The radial electric field is shown to drastically modify the resonance conditions between particles with certain kinetic characteristics and specific perturbative non-axisymmetric modes, and to enable the formation of transport barriers. The locations of the resonances and the transport barriers that determine the particle, energy and momentum transport are shown to be accurately pinpointed in the phase space by employing the calculated orbital frequencies.

引用

页数：24

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