Physical Fidelity in Particle-In-Cell Modeling of Small Debye-Length Plasmas

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The connection between macro-particle shape functions and non-physical phase-space"heating" in the particle-in-cell (PIC) algorithm is examined. The development of fine-scale phasespace structures starting from a cold initial condition is shown to be related to spatial correlations in the interpolated fields used in the Lorentz force. It is shown that the plasma evolution via the PIC algorithm from a cold initial condition leads to a state that is not consistent with that of a thermal plasma.

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7

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Shadwick, B.A. & Schroeder, C.B. August 1, 2008.

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Description

The connection between macro-particle shape functions and non-physical phase-space"heating" in the particle-in-cell (PIC) algorithm is examined. The development of fine-scale phasespace structures starting from a cold initial condition is shown to be related to spatial correlations in the interpolated fields used in the Lorentz force. It is shown that the plasma evolution via the PIC algorithm from a cold initial condition leads to a state that is not consistent with that of a thermal plasma.

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7

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  • 13th Advanced Accelerator Concepts Workshop, Santa Cruz, CA, July 27 - Aug. 2, 2008

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  • Report No.: LBNL-3182E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 983035
  • Archival Resource Key: ark:/67531/metadc1012111

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 2008

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  • Oct. 14, 2017, 8:36 a.m.

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  • Nov. 7, 2017, 7:16 p.m.

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Shadwick, B.A. & Schroeder, C.B. Physical Fidelity in Particle-In-Cell Modeling of Small Debye-Length Plasmas, article, August 1, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1012111/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.