Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...307..847b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 307, Aug. 15, 1986, p. 847-851.
Astronomy and Astrophysics
Astrophysics
47
Beryllium 7, Boron Isotopes, Cross Sections, Nuclear Reactions, Solar Neutrinos, Lithium Isotopes, Proton Energy, Spectral Energy Distribution
Scientific paper
Evidence is presented which indicates that the accepted value for the cross section of the (Be-7)(p, gamma)(B-8) reaction at stellar energies is probably too large. It is suggested that the accepted value of the (Li-7)(d, p)(Li-8) cross section, which has been used for normalization purposes, is too large; that the accepted value for the ratio of both cross sections is too large; and that the energy dependence used to extrapolate to stellar energies from the higher energies at which measurements have been made is inaccurate. The consequent reduction of the (Be-7)(p, gamma)(B-8) cross section by about 30 percent would not be sufficient to resolve the solar-neutrino problem but would significantly lessen the discrepancy between observation and calculation.
Barker F. C.
Spear R. H.
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