Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Threshold Activation Reaction and Absorption Dose Rates Inside and on
  the Surface of a Thick W-Na Target Irradiated with 0.8-GeV Proton   Results of measured threshold activation reaction rates in 12C, 19F, 27Al,
59Co, 63Cu, 65Cu, 64Zn, 93Nb, 115In, 169Tm, 181Ta, 197Au, and 209Bi
experimental samples placed both along the axis inside and outside a 0.8 GeV
proton-irradiated thick W-Na target are presented. Absorption dose rates
outside the target are presented as well. The target was irradiated by the
proton beam from the ITEP U10 accelerator. The measured reaction rates were
compared with the LAHET code simulated rates and using several nuclear
databases for the respective excitation functions, namely, ENDF/B6 for cross
section of neutrons at energies below 20 MeV and MENDL2 together with MENDL2P
for cross section of protons and neutrons of 20 to 100 MeV energies.

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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int