A treecode to simulate dust-plasma interactions
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Published version
Accepted version
Author(s)
Holgate, JT
Thomas, DM
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.
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.
Date Issued
2016-12-09
Date Acceptance
2016-11-15
Citation
Plasma Physics and Controlled Fusion, 2016, 59
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.
License URL
Subjects
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Fluids & Plasmas
Publication Status
Published
Article Number
025002