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" A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm "
Lehe, RKirchen, MAndriyash, IAGodfrey, BBVay, JL
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AL
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| Record Number
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902411
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LA2df1g63n
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| Title & Author
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A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm [Article]\ Lehe, RKirchen, MAndriyash, IAGodfrey, BBVay, JL
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2016
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Lawrence Berkeley National Laboratory
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| Abstract
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We propose a spectral Particle-In-Cell (PIC) algorithm that is based on the combination of a Hankel transform and a Fourier transform. For physical problems that have close-to-cylindrical symmetry, this algorithm can be much faster than full 3D PIC algorithms. In addition, unlike standard finite-difference PIC codes, the proposed algorithm is free of spurious numerical dispersion, in vacuum. This algorithm is benchmarked in several situations that are of interest for laser-plasma interactions. These benchmarks show that it avoids a number of numerical artifacts, that would otherwise affect the physics in a standard PIC algorithm - including the zero-order numerical Cherenkov effect.
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