Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of two-dimensional complex plasma monolayers in asymmetric
  capacitively-coupled radio-frequency discharges   In this article, the stability of a complex plasma monolayer levitating in
the sheath of the poweredelectrode of an asymmetric capacitively coupled
radio-frequency argon discharge is studied. Com-pared to earlier studies, a
better integration of the experimental results and theory is achieved
byoperating with actual experimental control parameters such as the gas
pressure and the dischargepower. It is shown that for a given microparticle
monolayer at a fixed discharge power there existtwo threshold pressures: (i)
above a specific pressure p cryst , the monolayer always crystallises;
(ii)below a specific pressure p MCI , the crystalline monolayer undergoes the
mode-coupling instability andthe two-dimensional complex plasma crystal melts.
In-between p MCI and p cryst , the microparticlemonolayer can be either in the
fluid phase or the crystal phase: when increasing the pressure frombelow p MCI
, the monolayer remains in the fluid phase until it reaches p cryst at which it
recrystallises;when decreasing the pressure from above p cryst , the monolayer
remains in the crystalline phase untilit reaches p MCI at which the
mode-coupling instability is triggered and the crystal melts. A
simpleself-consistent sheath model is used to calculate the rf sheath profile,
the microparticle charges and themicroparticle resonance frequency as a
function of power and background argon pressure. Combinedwith calculation of
the lattice modes the main trends of p MCI as a function of power and
backgroundargon pressure are recovered. The threshold of the mode-coupling
instability in the crystalline phaseis dominated by the crossing of the
longitudinal in-plane lattice mode and the out-of plane latticemode induced by
the change of the sheath profile. Ion wakes are shown to have a significant
effecttoo.

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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: math
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The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th