Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preparation of Isotopically enriched $^{112,116,120,124}$Sn targets at
  VECC   Resistive heating and mechanical rolling methods have been employed to
prepare isotopically enriched thin target foils of 116Sn (~380 \mu g/cm2),
124Sn(~400 \mu g/cm2) and thicker foils of 112Sn (1.7 mg/cm2),120Sn (1.6
mg/cm2),respectively. Preparation of enriched targets with small amount of
material, selection of releasing agent for thin targets and separation of
deposited material insolvent were among the several challenges while
fabrication of the thin targets. Uniformity of the targets has been measured
using 241Am {\alpha}-source. NaCl has been used as releasing agent in
preparation of the thin targets. These targets have been successfully used in
nuclear physics experiments at VECC.

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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn