Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of magnetic field on the hysteresis phenomena and floating
  potential oscillations in a reflex plasma source   An experimental investigation on the periodic and chaotic oscillations in a
reflex plasma source in presence of magnetic field is presented. The experiment
is conducted in a reflex plasma source, consisting of two cathodes and a ring
anode. A penning type DC glow discharge in an uniform axial magnetic field is
initiated in the background of argon gas. The current-voltage characteristics
near the breakdown voltage show a hysteresis with two distinct discharge
current regimes. The effect of magnetic field on the discharge current and
floating potential oscillations is studied when the discharge is operated
within this hysteresis loop. At a typical axial magnetic field, the discharge
transits from high discharge current regime (beyond 4-5 mA), an oscillation
free regime, to a low discharge current regime (less than 1 mA). Depending upon
the discharge parameters, low discharge current regime shows either the
periodic or chaotic oscillation in the frequency range of 1-50 KHz. The
frequency of periodic oscillation increases with the increase in magnetic field
up to 90 Gauss and with further increase in magnetic field, the periodic
oscillation becomes chaotic in nature.

2
The categories of this paper are: math
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph