Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Hotspots Better Half: Non-Equilibrium Intra-Molecular Strain in Shock
  Physics   Shockwave interactions with material microstructure localizes energy into
hotspots, which act as nucleation sites for complex processes such as phase
transformations and chemical reactions. To date, hotspots have been described
via their temperature fields. Nonreactive, all-atom molecular dynamics
simulations of shock-induced pore collapse in a molecular crystal show that
more energy is localized as potential energy (PE) than can be inferred from the
temperature field and that PE localization persists through thermal diffusion.
The origin of the PE hotspot is traced to large intra-molecular strains,
storing energy in modes readily available for chemical decomposition.

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The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th