Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental observation and computational analysis of striations in
  electronegative capacitively coupled radio-frequency plasmas   Self-organized spatial structures in the light emission from the ion-ion
capacitive RF plasma of a strongly electronegative gas (CF4) are observed
experimentally for the first time. Their formation is analyzed and understood
based on particle-based kinetic simulations. These "striations" are found to be
generated by the resonance between the driving radio-frequency and the
eigenfrequency of the ion-ion plasma (derived from an analytical model) that
establishes a modulation of the electric field, the ion densities, as well as
the energy gain and loss processes of electrons in the plasma. The growth of
the instability is followed by the numerical simulations.

11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th