Dynamics of current sheets and magnetic reconnection in different three- and two- dimensional magnetic configurations: experiment and theory

Informazioni relative al progetto

ID dell’accordo di sovvenzione: INTAS-93-2836

Progetto chiuso

Data di avvio 1 Ottobre 1994

Data di completamento 30 Settembre 1995

Finanziato da

• International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993-

Costo totale

Nessun dato

Contributo UE

€ 55 000,00

Coordinato da

Ruhr-Universität Bochum
Germany

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Risultati sfruttabili

Dynamics of current sheets and magnetic reconnection in different three- and two-dimensional magnetic configurations: experiment and theory

The goals of the project are theoretical and experimental investigations of magnetic energy accumulation, current sheet formation, magnetic reconnectionphenomena and particle acceleration as they occur in high-conductive plasmas in three- and two-dimensional magnetic fields of different topology. Field-reversed theta-pinch configurations, two-dimensional fields with zero-lines and X-type lines are of the highest interest. Major problems under study arethe magnetic energy accumulation by the current sheet formation, the energy release through the reconnection phenomena, the ways of energy transformation, the correlation between thermal processes and the impulsive stage of magnetic reconnection, and the emission properties of plasmas compressed into currentsheets. In the framework of the project the following work will be done: experimental investigations of the magnetic reconnection in high-density discharges intheta-pinch geometry; installation of magnetic probes to study the magnetic topology; investigation of spectral line profiles; experimental investigations of magnetic energy accumulation, current sheet information, magnetic reconnection phenomena in 2D and 3D magnetic fields of different topology; development ofexperimental techniques for the analysis of electric current distribution and spectral line shapes; theoretical study of the magnetic energy accumulation in thecourse of the MHD-wave propagation in the magnetic fields with the X-type points; theoretical study of particle acceleration near X-type points; computer simulation of the MHD-wave propagation and the current sheet formation at the magnetic fields with X-point; computer simulation of the current sheet formation and magnetic reconnection phenomena at 2D and 3D magnetic configurations; theoretical investigations of non-linear dynamics of perturbations bringing energy to an x-point and its separatives, study of fast reconnection, relevance of finite electron mass effects; theoretical investigations of theacceleration of test particles due to the electric fields generated by reconnection processes; theoretical simulation of current sheets and reconnection in 2D and3D configurations; analytical and numerical studies of fast reconnection and the accumulation of wave energy in X-points; numerical calculations of equilibrium sequences to investigate the non-linear evolution.