Coulomb Dissociation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>8</mml:mn></mml:mmultiscripts></mml:math>and the Low-Energy Cross Section of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">B</mml:mi><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mn>7</mml:mn></mml:mmultiscripts><mml:mo stretchy="false">(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>8</mml:mn></mml:mmultiscripts></mml:math>Solar Fusion Reaction
Аннотация
An exclusive measurement of the Coulomb breakup of $^{8}\mathrm{B}$ into $^{7}\mathrm{B}\mathrm{e}+p$ at $254A\text{ }\text{ }\mathrm{M}\mathrm{e}\mathrm{V}$ allowed the study of the angular correlations of the breakup particles. These correlations demonstrate clearly that $E1$ multipolarity dominates and that $E2$ multipolarity can be neglected. By using a simple single-particle model for $^{8}\mathrm{B}$ and treating the breakup in first-order perturbation theory, we extract a zero-energy $S$ factor of ${S}_{17}(0)=18.6\ifmmode\pm\else\textpm\fi{}1.2\ifmmode\pm\else\textpm\fi{}1.0\text{ }\text{ }\mathrm{e}\mathrm{V}\text{ }\mathrm{b}$, where the first error is experimental and the second one reflects the theoretical uncertainty in the extrapolation.
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