Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interaction of ultrarelativistic electron and proton bunches with dense
  plasmas   Here we discuss the possibility of employment of ultrarelativistic electron
and proton bunches for generation of high plasma wakefields in dense plasmas
due to the Cherenkov resonance plasma-bunch interaction. We estimate the
maximum amplitude of such a wake and minimum system length at which the maximum
amplitude can be generated at the given bunch parameters.

11
The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
1
The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci