Test-Particle Trajectories in a ``Sheared'' Stationary Field: Newton-Lorentz and First Order Drift Numerical Simulations1

摘要: We study a magnetic field distribution that is nonuniform and sheared like in tangential discontinuities. This an input parameter for the numerical integration of equations motion test-particle its guiding center. Two different electric distributions are alternatively tested. In first case, uniform constant prescribed large-scale, steady-state reconnection models. The solution shows this case trapped within discontinuity into region where (i) B goes to zero or (ii) vector becomes exactly parallel field. second we consider field, which nonuniform. Its components computed such order (or electric) drift everywhere perpendicular surface value conserved throughout simulation. numerically integrated trajectory penetrates any angle shear B. Direct comparison between exact (Newton–Lorentz) approximated (first drift) solutions mathematical singularities latter do not correspond physical singularity equation particle.