Academic Seminars 2021 No.115 -- D.T. Escande

==== Aix-Marseille Université ====

时间：2021年11月8日 周一 14:00

方式：Zoom会议（会议号895 1210 4408；密码704125）

报告人：D.T. Escande 教授

邀请人：朱平  教授

题目：3D Resistive Systems

摘要：Such systems are capable of magnetic reconnection, as evidenced in various laboratory, space, and astrophysical plasmas. For toroidal systems, magnetic islands develop in a process of helical magnetic self-organization, which involves a dynamo, called magnetic flux pumping for the hybrid tokamak scenario. Magnetics rules ohmic helical equilibria, and they slave the dynamo [1]. The tearing mode is the paradigm of ohmic helical self-organization. In slab geometry, it can be described by a linear calculation after an appropriate Ansatz [2]. The tearing mode does not saturate by opposing the cause of the instability, but by adapting to it [2].

[1] Cappello S, Bonfiglio D, Escande D F, Guo S C, Predebon I, Sattin F, Veranda M, Zanca P, C. Angioni, Chacón L, Dong J Q, Garbet X and Liu S F 2011, Nucl. Fusion 51 103012

[2] D. F. Escande and M. Ottaviani, Phys. Lett. A 323, 278 (2004)

报告人简介：Dominique Escande 教授是国际著名磁约束等离子体理论物理学家，在RFP等离子体准单螺旋态自组织过程等诸多领域都有原创性贡献，曾担任法国Tore Supra, 意大利 RFX 等装置实验室等主要研究部门主管，主持多次重要国际学术会议，目前任法国马赛大学高等研究员，国家科学研究中心荣誉退休研究主任等。