Vacuum polarization and nuclear reactions at energies of astrophysical interest

Details Vacuum polarization and nuclear reactions at energies of astrophysical interest Vacuum polarization and nuclear reactions at energies of astrophysical interest

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284..300d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 1, p. 300-306

Astronomy and Astrophysics

Astrophysics

2

Coulomb Potential, Nuclear Fusion, Polarization, Vacuum, Carbon 12, Heavy Ions, Oxygen, Proton-Proton Reactions, Solar Neutrinos, Sun

Scientific paper

In the WKB approximation, we provide general expressions for the vacuum polarization correction to the penetrability factor for nuclear reactions at energies below the Coulomb barrier. We analyze some specific cases: (a) the reactions of the p-p cycle in the Sun, with particular attention to the p + p yields d + e(+) + nue cross section and to the influence on the calculation of solar neutrino fluxes. (b) The C-12 + C-12 and O-16 + O-16 reactions, especially concerning the extraction of the astrophysical S-factor at zero energy from experimental data. (c) Heavy ion fusion reactions (e.g. Ni-64 + Ni-64), which are of intrinsic interest from the nuclear physics point of view, and which have been measured down to relatively low energies.

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