Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 1s2s2p23d 6L - 1s2p33d 6D, L=F, D, P Transitions in O IV, F V and Ne VI   We present observations of VUV transitions between doubly excited sextet
states in O IV, F V and Ne VI. Spectra were produced by collisions of an O+
beam with a solid carbon target. We also studied spectra obtained previously of
F V and Ne VI. Some observed lines were assigned to the 1s2s2p23d 6L - 1s2p33d
6D, L=F, D, P electric-dipole transitions, and compared with results of MCHF
(with QED and higher-order corrections) and MCDF calculations. 42 new lines
have been identified. Highly excited sextet states in five-electron ions
provide a new form of energy storage and are possible candidates for VUV and
x-ray lasers.

15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas