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000835922 1001_ $$0P:(DE-HGF)0$$aSiddi, Lorenzo$$b0
000835922 245__ $$aMesh-free Hamiltonian implementation of two dimensional Darwin model
000835922 260__ $$a[S.l.]$$bAmerican Institute of Physics$$c2017
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000835922 520__ $$aA new approach to Darwin or magnetoinductive plasma simulation is presented, which combines amesh-free field solver with a robust time-integration scheme avoiding numerical divergence errorsin the solenoidal field components. The mesh-free formulation employs an efficient parallelBarnes-Hut tree algorithm to speed up the computation of fields summed directly from the particles,avoiding the necessity of divergence cleaning procedures typically required by particle-incellmethods. The time-integration scheme employs a Hamiltonian formulation of the Lorentzforce, circumventing the development of violent numerical instabilities associated with time differentiationof the vector potential. It is shown that a semi-implicit scheme converges rapidly and isrobust to further numerical instabilities which can develop from a dominant contribution of the vectorpotential to the canonical momenta. The model is validated by various static and dynamicbenchmark tests, including a simulation of the Weibel-like filamentation instability in beam-plasmainteractions.
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000835922 536__ $$0G:(DE-Juel1)jzam04_20130501$$aKinetic Plasma Simulation with Highly Scalable Particle Codes (jzam04_20130501)$$cjzam04_20130501$$fKinetic Plasma Simulation with Highly Scalable Particle Codes$$x1
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000835922 7001_ $$00000-0002-3123-4024$$aLapenta, Giovanni$$b1
000835922 7001_ $$0P:(DE-Juel1)132115$$aGibbon, Paul$$b2$$eCorresponding author$$ufzj
000835922 773__ $$0PERI:(DE-600)1472746-8$$a10.1063/1.4994705$$gVol. 24, no. 8, p. 082103 -$$n8$$p082103$$tPhysics of plasmas$$v24$$x1089-7674$$y2017
000835922 8564_ $$uhttps://juser.fz-juelich.de/record/835922/files/1.4994705.pdf$$yPublished on 2017-07-20. Available in OpenAccess from 2018-07-20.
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