Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coulomb excitation at intermediate energies   Straight line trajectories are commonly used in semi-classical calculations
of the first-order Coulomb excitation cross section at intermediate energies,
and simple corrections are often made for the distortion of the trajectories
that is caused by the Coulomb field. These approximations are tested by
comparing to numerical calculations that use exact Coulomb trajectories. In
this paper a model is devised for including relativistic effects in the
calculations. It converges at high energies towards the relativistic
straight-line trajectory approximation and approaches the non-relativistic
Coulomb trajectory calculation at low energies. The model is tested against a
number of measurements and analyses that have been performed at beam energies
between 30 and 70 MeV/nucleon, primarily of quadrupole excitations. Remarkably
good agreement is achieved with the previous analyses, and good agreement is
also achieved in the few cases, where the B(E$\lambda$) value is known from
other methods. The magnitudes of the relativistic and Coulomb distortion
effects are discussed.

17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat