Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiative proton capture on $^6$He   Radiative capture of protons is investigated as a probe of clustering in
nuclei far from stability. The first such measurement on a halo nucleus is
reported here for the reaction $^6$He(p,$\gamma$) at 40 MeV. Capture into
$^7$Li is observed as the strongest channel. In addition, events have been
recorded that may be described by quasi-free capture on a halo neutron, the
$\alpha$ core and $^5$He. The possibility of describing such events by capture
into the continuum of $^7$Li is also discussed.

20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ