Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Landau-Pomeranchuk-Migdal effect in a thin target   The Landau, Pomeranchuk, Migdal (LPM) effect (suppression of the
bremsstrahlung from high energy electron due to a multiple scattering of an
emitting electron in dense media) is considered for the case when thickness of
a target is of the order or less than the formation length of radiation. The
effects of the polarization of a medium and transition radiation are taken into
account as well. Qualitative picture of the phenomenon is discussed in detail.
Comparison with recent experimental data is carried out.

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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
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The categories of this paper are: eess
9
The categories of this paper are: nlin