We apply the realistic shell model which includes the coupling between many
-particle (quasi-) bound states and the continuum of one-particle scatterin
g states to the spectroscopy of mirror nuclei B-8 and Li-8, as well as to t
he description of low-energy cross sections (the astrophysical S-factors) i
n the capture reactions Be-7(p, gamma)B-8 and Li-7(n, gamma)Li-8. (C) 1999
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