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- W1512780730 abstract "A two-dimensional gyrokinetic particle-in-cell (2D-gyroPIC) model, designed to simulate driven magnetic reconnection in the VINETA-II experiment, has been employed to study the influence of plasma resistivity on the reconnection rate in non-uniform plasmas. Introduction The transfer of magnetic to kinetic energy during magnetic reconnection in low-collisionality systems, such as tokamaks and solar flares, proceeds orders of magnitude faster than expected from MHD theory. In order to have predictive models for the quantitative spatial and temporal evolutions of reconnection it is necessary to understand the influence of plasma parameters on the reconnection process [1, 2]. magnetic X-point public flux private flux separatrices private flux Bg Figure 1: The magnetic geometry of the model is illustrated with flux surfaces of constant Az. Perpendicular to the azimuthal field is a guide field Bg. Based on a Vlasov–Ampere–Poisson gyrokinetic particle-in-cell code (gyroPIC) [3], a two-dimensional periodic slab model for studies of magnetic reconnection in low-beta plasmas [4] has been implemented to support the experimental efforts at the VINETA-II linear device [5, 6]. The experiment is designed to produce plasmas and magnetic-field configurations over a wide parameter range, thereby allowing for 3D-studies of slow collisional to fast collisionless reconnection. As illustrated in Fig. 1 the prescribed magnetic geometry consists of an azimuthal separatrix field and an axial guide field. Private flux is driven toward the magnetic X-point to initiate reconnection. The plasmas, with profiles peaking at the X-point, have densities ranging over n = 1016−19 m−3, electron temperatures Te = 2 – 6 eV, and ion temperatures of Ti ≈ 0.1 eV. 41 EPS Conference on Plasma Physics P4.118" @default.
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- W1512780730 date "2014-01-01" @default.
- W1512780730 modified "2023-09-25" @default.
- W1512780730 title "Gyrokinetic simulations of magnetic reconnection in non-uniform plasmas" @default.
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