Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutron-scattering studies of arsenic sulphide glasses   High-resolution neutron-scattering measurements have been performed on bulk
glasses of As2S3 and As2S3I1.65 at a spallation neutron source. For the case of
As2S3, an isotopic-substitution experiment involving the S isotope has allowed
some of the various pair correlations contributing to the second peak in the
radial distribution function to be determined by the method of first
differences. For the ternary glass, it has been confirmed that iodine bonds
preferentially to As atoms, and that on average each As atom is coordinated to
one iodine and two sulphur atoms in the first coordination shell.

3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci