Cross Sections for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Be</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>7</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow><mml:mo>(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo>)</mml:mo><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>8</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>Reaction

Cross sections for the $^{7}\mathrm{Be}(p,\ensuremath{\gamma})^{8}\mathrm{B}$ reaction have been measured at 20 proton energies ranging from 0.953 to 3.281 MeV. Measurements were made relative to the cross section for the $^{7}\mathrm{Li}(d,p)^{8}\mathrm{Li}$ reaction at the 0.770-MeV resonance peak. The results were analyzed in two ways to obtain values for $S(0)$, the zero-energy cross-section factor. The first type of analysis, based on the assumption that the observed cross section was composed of a nonresonant part and resonant contributions from the first two excited states of $^{8}\mathrm{B}$, gave an $S(0)$ of 0.0263 \ifmmode\pm\else\textpm\fi{} 0.0027 keVb. The second type of analysis assumed an additional resonance contribution from a higher-lying state and led to an $S(0)$ of 0.0226 \ifmmode\pm\else\textpm\fi{} 0.0043 keVb. The result obtained from the second analysis represents our best estimate for the value of $S(0)$ obtainable from the present measurements.

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