Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental observation of drift wave turbulence in an inhomogeneous
  six-pole cusp magnetic field of MPD   This paper presents a detailed study on the controlled experimental
observation of drift wave instabilities in an inhomogeneous Six pole cusp
magnetic field generated by an in-house developed Multi-pole line cusp magnetic
field device (MPD) [Patel et al. Rev. Sci. Instrum., 44, 726 (2018)]. The
device is composed of six axially symmetric cusps and non-cusp (in between two
consecutive magnets) regions. The observed instability has been investigated in
one of these non-cusp regions by controlling the radial plasma density gradient
with changing pole magnetic field which is a unique feature of this device. It
has been observed that the frequency of the instability changes explicitly with
the density gradient. Moreover the scale length of plasma parameters, frequency
spectrum, cross-correlation function, and fluctuation level of plasma densities
has been measured in order to identify the instability. The cross field drift
velocity due to fluctuation in plasma parameters have been measured from the
wave number- frequency S (kz, {\omega}) spectrum and verified with the
theoretical values obtained from density scale length formula. Further from the
S (kz, {\omega}) spectrum it has been found that the drift velocity alternates
the sign in the consecutive non-cusp regions.

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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: econ