Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mag2Pol: A program for the analysis of spherical neutron polarimetry,
  flipping ratio and integrated intensity data   Mag2Pol is a graphical user interface program which is devoted to the
analysis of data from polarized neutron diffractometers with spherical
polarization analysis. Nuclear and magnetic structure models can be introduced
using space group symbols and individual symmetry operators, respectively, and
viewed in an OpenGL widget. The program calculates nuclear/magnetic structure
factors, flipping ratios and polarization matrices for magnetic Bragg
reflections taking into account structural twins and magnetic domains.
Spherical neutron polarimetry data can be analyzed by refining a magnetic
structure model including magnetic domain populations in a least-squares fit
and can also be correlated to an integrated intensity data set in a joint
refinement. Further features are the simultaneous refinement of nuclear and
magnetic structures with integrated intensity data and the analysis of flipping
ratios either with tabulated magnetic form factors or using a multipole
expansion of the magnetization density.

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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: hep-lat
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The categories of this paper are: chem-ph
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The categories of this paper are: nlin
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an