Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Perturbation of Nuclear Decay Rates During the Solar Flare of 13
  December 2006   Recently, Jenkins, et al. have reported the detection of correlations between
fluctuations in nuclear decay rates and Earth-Sun distance, which suggest that
nuclear decay rates can be affected by solar activity. In this paper, we report
the detection of a significant decrease in the decay of 54Mn during the solar
flare of 13 December 2006, whose x-rays were first recorded at 02:37 UT (21:37
EST on 12 December). Our detector was a 1 uCi sample of 54Mn, whose decay rate
exhibited a dip coincident in time with spikes in both the x-ray and proton
fluxes recorded by the GOES-10 and 11 satellites. A secondary peak in the x-ray
and proton fluxes on 17 December at 12:40 EST was also accompanied by a
coincident dip in the 54Mn decay rate. These observations support the claim by
Jenkins, et al. that nuclear decay rates vary with Earth-Sun distance.

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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
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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: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex