Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influences of the Transverse Motions of the Particles to the
  Recombination Rate of a Co-propagating Electron-ion System   For a system with the ion beam co-propagating with the electron beam, such as
a traditional electron cooler or a Coherent electron Cooler (CeC), the
recombination rate is an important observable for matching the energy of the
electrons with the ions. In this work, we have developed the analytical
expressions to investigate how the recombination rate depends on the energy
difference of the two beams, with the influences from the transverse motions of
the particles being considered. The analytical results are then used to analyze
the measured recombination data collected during the CeC experiment in run 21.

36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph