Article

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">S</mml:mi></mml:mrow><mml:mrow><mml:mn>17</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>(</mml:mo><mml:mn>0</mml:mn><mml:mo>)</mml:mo></mml:math>Determined from the Coulomb Breakup of 83 MeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>/</mml:mi></mml:math>Nucleon<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>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>

B. DavidsNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA. [email protected]D. W. AnthonyDepartment of Chemistry, Michigan State University, East Lansing, Michigan 48824T. AumannNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824Sam M. AustinDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824T. BaumannNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824D. BazinNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824R. R. C. ClementDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824C. N. DavidsPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439H. EsbensenPhysics Division, Argonne National Laboratory, Argonne, Illinois 60439P. A. LofyDepartment of Chemistry, Michigan State University, East Lansing, Michigan 48824T. NakamuraNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824B. M. SherrillDepartment of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824J. YurkonNational Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824

2001lv

ABI

Abstract

A kinematically complete measurement was made of the Coulomb dissociation of ${}^{8}\mathrm{B}$ nuclei on a Pb target at 83 MeV/nucleon. The cross section was measured at low relative energies in order to infer the astrophysical S factor for the ${}^{7}\mathrm{Be}(p,\ensuremath{\gamma}{)}^{8}\mathrm{B}$ reaction. A first-order perturbation theory analysis including $E1$, $E2$, and $M1$ transitions was employed to extract the $E1$ strength relevant to neutrino-producing reactions in the solar interior. By fitting the measured cross section from ${E}_{\mathrm{rel}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}130$ to 400 keV, we find ${S}_{17}(0){\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}17.8}_{\ensuremath{-}1.2}^{+1.4}\phantom{\rule{0ex}{0ex}}\mathrm{eV}\mathrm{b}$.

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Identifiers

DOI: 10.1103/physrevlett.86.2750

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