Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Irradiation of nuclear emulsions in relativistic beams of He-6 and H-3
  nuclei   Using a Li-6 nucleus beam extracted from the JINR Synchrophasotron at
momentum 2.67A GeV/c a secondary beam was produced with a composition of 1% of
He-6 and 99% of H-3 nuclei. Preliminary results on the features of
nucleus-nucleus interactions of He-6 nuclei and charge exchange (CE) of H-3
nucleus are presented. Interactions of He-6 nucleus external neutrons with
emulsion nuclei as well as a coherent stripping of He-6 nucleus external
neutrons are observed. A mean range of H-3 nuclei to inelastic interactions in
the BR-2 type emulsion is equal to 23.$\pm$3.0 cm. A mean range in emulsion for
a nuclear CE process H-3 to He-3 is equal to 40$\pm$16 m. The CE cross-sections
with a charged meson production or without it are approximately equal. The CE
cross-section with excitation of a target nucleus exceeds the one without
excitation. The mean transverse momentum of He-3 nuclei is equal to
0.16$\pm$0.03 GeV/c.

33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph