Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of Temporal Variations in Plasma Conditions on the Electric
  Potential Near Self-Organized Dust Chains   The self-organization of dust grains into stable filamentary dust structures
(or "chains") largely depends on dynamic interactions between the individual
charged dust grains and the complex electric potential arising from the
distribution of charges within the local plasma environment. Recent studies
have shown that the positive column of the gas discharge plasma in the
Plasmakristall-4 (PK-4) experiment onboard the International Space Station
(ISS) supports the presence of fast-moving ionization waves, which lead to
variations of plasma parameters by up to an order of magnitude from the average
background values. The highly-variable environment resulting from ionization
waves may have interesting implications for the dynamics and self-organization
of dust particles, particularly concerning the formation and stability of dust
chains. Here we investigate the electric potential surrounding dust chains in
the PK-4 by employing a molecular dynamics model of the dust and ions with
boundary conditions supplied by a Particle-in-Cell with Monte Carlo collisions
(PIC-MCC) simulation of the ionization waves. The model is used to examine the
effects of the plasma conditions within different regions of the ionization
wave and compare the resulting dust structure to that obtained by employing the
time-averaged plasma conditions. Comparison between simulated dust chains and
experimental data from the PK-4 shows that the time-averaged plasma conditions
do not accurately reproduce observed results for dust behavior, indicating that
more careful treatment of plasma conditions in the presence of ionization waves
is required. It is further shown that commonly used analytic forms of the
electric potential do not accurately describe the electric potential near
charged dust grains under these plasma conditions.

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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
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The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
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The categories of this paper are: stat
35
The categories of this paper are: mtrl-th