Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Temperature dependence of the pre-edge structure in the Ti K-edge x-ray
  absorption spectrum of rutile   The temperature dependence of the pre-edge features in x-ray absorption
spectroscopy is reviewed. Then, the temperature dependence of the pre-edge
structure at the K-edge of titanium in rutile TiO2 is measured at low and room
temperature. The first two peaks grow with temperature. The fact that these two
peaks also correspond to electric quadrupole transitions is explained by a
recently proposed theory.

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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
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The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org