Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Clustering and Correlations in Neutron Haloes   In the present paper clustering and correlations within halo systems is
explored. In particular, the application of neutron-neutron interferometry and
Dalitz-plot type analyses is presented through the example provided by the
dissociation of 14Be. A novel approach for producing and detecting bound
neutron clusters is also described. The observation of some 6 events with
characteristics consistent with the liberation of a multineutron cluster in the
breakup of 14Be -- possibly in the channel 10Be+4n -- is discussed.

32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
14
The categories of this paper are: math-ph