Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-m Kink/Tearing Modes in Cylindrical Geometry   The global ideal kink equation, for cylindrical geometry and zero beta, is
simplified in the high poloidal mode number limit and used to determine the
tearing stability parameter, $\Delta^\prime$. In the presence of a steep
monotonic current gradient, $\Delta^\prime$ becomes a function of a parameter,
$\sigma_0$, characterising the ratio of the maximum current gradient to
magnetic shear, and $x_s$, characterising the separation of the resonant
surface from the maximum of the current gradient. In equilibria containing a
current "spike", so that there is a non-monotonic current profile,
$\Delta^\prime$ also depends on two parameters: $\kappa$, related to the ratio
of the curvature of the current density at its maximum to the magnetic shear,
and $x_s$, which now represents the separation of the resonance from the point
of maximum current density. The relation of our results to earlier studies of
tearing modes and to recent gyro-kinetic calculations of current driven
instabilities, is discussed, together with potential implications for the
stability of the tokamak pedestal.

15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org