Diffusive time evolution of the Grad-Shafranov equation for a toroidal plasma

被引：1

作者：

Montani, Giovanni ^{[1
,2
]}

Del Prete, Matteo ^{[2
]}

Carlevaro, Nakia ^{[1
,3
]}

Cianfrani, Francesco ^{[4
]}

机构：

[1] ENEA, Fus & Nucl Safety Dept, Via E Fermi 45, I-00044 Rome, Italy

[2] Sapienza Univ Rome, Phys Dept, Ple Aldo Moro 5, I-00185 Rome, Italy

[3] CREATE Consortium, Via Claudio 21, I-80125 Naples, Italy

[4] Aix Marseille Univ, CNRS, PIIM, UMR7345, 58 Blvd Charles Livon, F-13007 Marseille, France

来源：

JOURNAL OF PLASMA PHYSICS | 2021年 / 87卷 / 03期

关键词：

plasma confinement; plasma dynamics; CLASSICAL DIFFUSION; RESISTIVE EVOLUTION; TOKAMAK;

D O I：

10.1017/S002237782100057X

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：

We describe the evolution of a plasma equilibrium having a toroidal topology in the presence of constant electric resistivity. After outlining the main analytical properties of the solution, we illustrate its physical implications by reproducing the essential features of a scenario for the upcoming Italian experiment Divertor Tokamak Test Facility, with a good degree of accuracy. Although we find the resistive diffusion time scale to be of the order of 10(4) s, we observe a macroscopic change in the plasma volume on a time scale of 10(2) s, comparable to the foreseen duration of the plasma discharge by design. In the final part of the work, we compare our self-consistent solution to the more common Solov'ev one, and to a family of nonlinear configurations.

引用

页数：15

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