Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calibration of liquid argon detector with $^{83m}Kr$ and $^{22}Na$ in
  different drift field   $^{83m}Kr$ and $^{22}Na$ have been used in calibrating a liquid argon (LAr)
detector.$^{83m}Kr$ atoms are produced through the decay of $^{83}Rb$ and
introduced into the LAr detector through the circulating purification system.
The light yield reaches 7.26$\pm$0.02 photonelectrons/keV for 41.5keV from
$^{83m}Kr$ and 7.66$\pm$0.01 photonelectrons/keV for the 511keV from $^{22}Na$,
as a comparison. The light yield varies with the drift electric field from 50
to 200V/cm have been also reported. After stopping fill, the decay rate of
$^{83m}Kr$ with a fitted half-life of 1.83$\pm$0.11 h, which is consistent with
the reported value of 1.83$\pm$0.02 h.

34
The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
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The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph