Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bulk effects in the coherent inelastic scattering of ultracold neutrons   With the use of theory developed earlier, bulk effects in ultracold neutron
coherent inelastic scattering are considered both for solid and liquid target
samples related to energy and momentum exchange with phonon and diffusion-like
modes. For the neutron in a material trap, differential and integral
probabilities for the energy transfer per bounce are presented in a simple
analytic form which exhibits the parameter dependence. As an example, the
theoretical values for the ultracold neutron loss rate from a storage bottle
with Fomblin coated walls and stainless steel walls are evaluated. Possible
contribution from incoherent inelastic scattering on hydrogen contamination is
discussed.

17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex