Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-energy collisions between electrons and BeH$^+$: cross sections and
  rate coefficients for all the vibrational states of the ion   We provide cross sections and Maxwell rate coefficients for reactive
collisions of slow electrons with BeH$^+$ ions on all the eighteen vibrational
levels ($X{^{1}\Sigma^{+}},v_{i}^{+}=0,1,2,\dots,17$) using a Multichannel
Quantum Defect Theory (MQDT) - type approach. These data on dissociative
recombination, vibrational excitation and vibrational de-excitation are
relevant for magnetic confinement fusion edge plasma modelling and
spectroscopy, in devices with beryllium based main chamber materials, such as
the International Thermonuclear Experimental Reactor (ITER) and the Joint
European Torus (JET). Our results are presented in graphical form and as fitted
analytical functions, the parameters of which are organized in tables.

18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph