Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Convergent Oscillations of the Flux Line Lattice as a
  Result of Magnetic Flux Jumping in Hard Superconductors   We have monitored new peculiarities of the dynamics of catastrophic
avalanches of the magnetic flux in superconducting Nb, Nb-Ti, and YBaCuO
samples: i) convergent oscillations of the magnetic flux; ii) a threshold for
entering the huge flux avalanches in the shielding experiments; iii) a
threshold for the exit of a residual flux in the trapping experiments. The
observed phenomena are interpreted in terms of a theoretical model which takes
into account the inertial properties of the vortex matter.

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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
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The categories of this paper are: eess
30
The categories of this paper are: q-alg