Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stochastic Ion Heating by a Lower Hybrid Wave: II   The motion of an ion in a coherent lower hybrid wave (characterized by
|k_parallel| << |k_perp| and omega >> Omega_i) in a tokamak plasma is studied.
For ions satisfying v_perp > omega/k_perp, the Lorentz force law for the ions
is reduced to a set of difference equations which give the Larmor radius and
phase of an ion on one cyclotron orbit in terms of these quantities a cyclotron
period earlier. From these difference equations an earlier result [Phys. Fluids
21, 1584 (1978)] that above a certain wave amplitude the ion motion is
stochastic, is readily obtained. The stochasticity threshold is given a simple
physical interpretation. In addition, the difference equations are used to
derive a diffusion equation governing the heating of the ions above the
stochasticity threshold. By including the effects of collisions, the heating
rate for the bulk ions is obtained.

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The categories of this paper are: eess
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th