Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure refinement from 'Digital' Large Angle Convergent Beam Electron
  Diffraction Patterns   We use semi-automated data acquisition and processing to produce digital
large angle CBED (D-LACBED) patterns. We demonstrate refinements of atomic
coordinates and isotropic Debye-Waller factors for well-known materials using
simulations produced with a neutral, spherical independent atom model. We find
that atomic coordinate refinements in Al2O3 have sub-pm precision and accuracy.
Isotropic DWFs are accurate for Cu, a simple fcc metal, but do not agree with
X-ray measurements of GaAs or Al2O3. This indicates that models of bonding will
be essential to fully interpret D-LACBED data.

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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph