Sergey Dubovichenko, Albert Dzhazairov-Kakhramanov
In this review we have considered the possibility to describe the
astrophysical S-factors of radiative capture reactions with light atomic nuclei
on the basis of the potential two-cluster model by taking into account the
separation of orbital states according to Young's schemes. Within this model,
the interaction of nucleon clusters is described by local two-particle
potential determined by fit to the scattering data and properties of bound
states of these clusters. Many-body character of the problem is taken into
account under some approximation, in terms of the allowed or forbidden states
by the Pauli principle in intercluster potentials. An important feature of the
approach is the accounting of the dependence of interaction potential between
clusters on the orbital Young's schemes, which determines the permutation
symmetry of the nucleon system. The astrophysical S-factors of the radiative
proton capture on 2H, 6Li, 7Li, 12C and 13C are analyzed on the basis of this
approach. It is shown that the approach allows one to describe, quite
reasonably, the experimental data available at low energies, when the phase
shifts of cluster-cluster scattering are extracted from the data with minimal
errors. In this connection, the problem of experimental error decrease is
exclusively urgent for the differential cross-sections of the elastic
scattering of light atomic nuclei at astrophysical energies and for performing
a more accurate phase shift analysis. In the future, increase in the accuracy
will allow one to make more definite conclusions regarding the mechanisms and
conditions of thermonuclear reactions, as well as the better understanding of
their nature.
View original:
http://arxiv.org/abs/1202.1995
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