Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...392..320j&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 392, no. 1, June 10, 1992, p. 320-327.
Astronomy and Astrophysics
Astrophysics
85
Beryllium Isotopes, Electron Capture, Nuclear Fusion, Solar Neutrinos, Debye-Huckel Theory, Schroedinger Equation, Stellar Models, Wave Scattering
Scientific paper
The electron- and proton-capture rates of Be-7 important to the solar neutrino 'problem' are reexamined. Although the assumptions implied by the traditional Debye approximation for plasma screening are not valid, a careful numerical study changes the electron capture rate by less than 2 percent. Experimental data on the proton capture reaction are extrapolated to astrophysically relevant energies, using an energy dependence that includes d-wave scattering and is shown to be relatively independent of the model space and interaction used. It is found that the solar proton capture rate is lowered by approximately 7 percent from the currently accepted value.
Johnson Calvin W.
Kolbe Edwin
Koonin Steven E.
Langanke Karlheinz
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