A treecode to simulate dust-plasma interactions

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Title: A treecode to simulate dust-plasma interactions
Author(s): Holgate, JT
Thomas, DM
Item Type: Journal Article
Abstract: The interaction of a small object with surrounding plasma is an area of plasma-physics research with a multitude of applications. This paper introduces the plasma octree code pot , a microscopic simulator of a spheroidal dust grain in a plasma. pot uses the Barnes-Hut treecode algorithm to perform N -body simulations of electrons and ions in the vicinity of a chargeable spheroid, employing also the Boris particle-motion integrator and Hutchinson's reinjection algorithm from SCEPTIC; a description of the implementation of all three algorithms is provided. We present results from pot simulations of the charging of spheres in magnetized plasmas, and of spheroids in unmagnetized plasmas. The results call into question the validity of using the Boltzmann relation in hybrid PIC codes.
Publication Date: 9-Dec-2016
Date of Acceptance: 15-Nov-2016
URI: http://hdl.handle.net/10044/1/42677
DOI: https://dx.doi.org/10.1088/1361-6587/59/2/025002
ISSN: 0741-3335
Publisher: IOP Publishing
Journal / Book Title: Plasma Physics and Controlled Fusion
Volume: 59
Copyright Statement: Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Keywords: 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Fluids & Plasmas
Publication Status: Published
Article Number: 025002
Open Access location: http://iopscience.iop.org/article/10.1088/1361-6587/59/2/025002
Appears in Collections:Physics
Plasma Physics
Faculty of Natural Sciences



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