Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A pilot study of the novel J-PET plastic scintillator with
  2-(4-styrylphenyl)benzoxazole as a wavelength shifter   For the first time a molecule of 2-(4-styrylphenyl)benzoxazole containing
benzoxazole and stilbene groups is applied as a scintillator dopant acting as a
wavelength shifter. In this article a light yield of the plastic scintillator,
prepared from styrene doped with 2 wt% of 2,5-diphenylbenzoxazole and 0.03 wt%
of 2-(4-styrylphenyl)benzoxazole, is determined to be as large as 60% $\pm$ 2%
of the anthracene light output. There is a potential to improve this value in
the future by the optimization of the additives concentrations.

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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th