Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scattering of Ultra Cold Neutrons on Nano-size Bubbles   Inelastic scattering of ultra cold neutrons on bubbles with the size of
nanometers is considered. It is shown that neutron-bubble cross section is
large and sensitive to different vibration modes of bubbles. This process could
be used for study of dynamics of nano-size bubbles and for new methods of ultra
cold neutron production.

14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs