Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The role of magnetic islands in modifying long range temporal
  correlations of density fluctuations and local heat transport   This work explores the relation between magnetic islands, long range temporal
correlations and heat transport. A low order rational surface ($\iota/2\pi =
3/2$) was purposely scanned outward through an Electron Cyclotron Resonance
Heated (ECRH) plasma in the TJ-II stellarator. Density turbulence and the
poloidal flow velocity (or radial electric field) were characterized using a
two channel Doppler Reflectometer. Simultaneously, the ECRH power was modulated
to characterize heat transport, using measurements from a 12 channel Electron
Cyclotron Emission diagnostic. A systematic variation of the poloidal velocity
was found to be associated with the stationary $\iota/2\pi = 3/2$ magnetic
island. Inside from the rational surface, the Hurst coefficient, quantifying
the nature of long-range correlations, was found to be significantly enhanced.
Simultaneously, heat transport was enhanced as well, establishing a clear link
between density fluctuations and anomalous heat transport. The variation of the
Hurst coefficient was consistent with a magnetohydrodynamic turbulence
simulation.

35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
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The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat