The absolute cross section sigma(E) of the radiative capture reaction p(Be-
7,gamma)B-8 at the center-of mass energy E = 992 keV has been measured usin
g a radioactive 7Be ion beam and a windowless gas target system filled with
H-2 gas. The B-8 residual nuclides were detected with a recoil separator c
onsisting of momentum and velocity filters and a BE E detector telescope. T
he B-8 yield was observed concurrently with the Be-7+p elastic scattering y
ield, relating sigma(E) to the Rutherford scattering cross section. The res
ulting value, sigma(E) = 0.41+/-0.11 mu b, leads to an S(E) factor at zero
energy of S(0) = 16+/-4 eV b, in fair agreement with recommended values.