Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gallium experiments with artificial neutrino sources as a tool for
  investigation of transition to sterile states   We propose to place a very intense source of 51Cr at the center of a 50-tonne
target of gallium metal that is divided into two concentric spherical zones and
to measure the neutrino capture rate in each zone. This experiment can set
limits on transitions from active to sterile neutrinos with Delta m^2 ~ 1 eV^2
with a sensitivity to disappearance of electron neutrinos of a few percent.

36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn