Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Computationally supported neutron scattering study of natural shungite,
  anthraxolite, and synthetic carbon black   A set of sp2 amorphous carbons involving natural mineral shungite carbon and
antraxolite as well as two synthetic carbon blacks were investigated by using
neutron powder diffraction and inelastic neutron scattering at low temperature.
NDP revealed nanographite-like structure of all the samples, stacks of which
are formed by basic structure units representing framed graphene molecules of
~2.5 nm in lateral dimension. INS study showed the presence of hydrogen atoms
in the BSU framing area as well as of adsorbed water in the samples pores.
Simulated INS spectra of adsorbed water showed its mono-layer disposition
within the pores of the studied amorphics. Due to BSUs radical character, their
INS spectra were simulated in the framework of both spin-nondependent (DFT) and
spin-dependent (UHF) molecular dynamics. The obtained results allowed
suggesting a specific INS classification of sp2 amorphous carbons with respect
to their hydrogeneousness based on H-standard INS spectra, on the one side, and
riding-stimulated spectrum of heavy atoms, on the other.

16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin