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A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor
The $^{7}$Be(p, $\gamma$) $ \,^{8}$B reaction plays a central role in the evaluation of solar neutrino fluxes. We report on a new precision measurement of the cross section of this reaction, following our previous experiment with an implanted target, a raster scanned beam and the elimination of back...
| Autores principales: | , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevC.67.065805 https://dx.doi.org/10.1103/PhysRevC.69.019902 http://cds.cern.ch/record/596290 |
| _version_ | 1780899808597245952 |
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| author | Baby, L.T. Bordeanu, C. Goldring, G. Hass, M. Weissman, L. Fedoseyev, V.N. Koster, U. Nir-El, Y. Haquin, G. Gaggeler, H.W. Weinreich, R. |
| author_facet | Baby, L.T. Bordeanu, C. Goldring, G. Hass, M. Weissman, L. Fedoseyev, V.N. Koster, U. Nir-El, Y. Haquin, G. Gaggeler, H.W. Weinreich, R. |
| author_sort | Baby, L.T. |
| collection | CERN |
| description | The $^{7}$Be(p, $\gamma$) $ \,^{8}$B reaction plays a central role in the evaluation of solar neutrino fluxes. We report on a new precision measurement of the cross section of this reaction, following our previous experiment with an implanted target, a raster scanned beam and the elimination of back-scattering losses. The new measurement incorporates a higher activity $^{7}$Be target and a number of improvements in design and procedure. The cross section at Ec.m. = 850 keV was measured several times under varying experimental conditions, yielding a value of S$_{17}$(Ec.m.=850 keV) = 24.0 $\pm$ 0.5 eV b. Measurements were carried out at lower energies as well. We obtain from the entire set of measurements an extrapolated value of S$_{17}$(0) = 21.2 $\pm$ 0.7 eV b. |
| id | cern-596290 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2002 |
| record_format | invenio |
| spelling | cern-5962902023-03-14T18:09:32Zdoi:10.1103/PhysRevC.67.065805doi:10.1103/PhysRevC.69.019902http://cds.cern.ch/record/596290engBaby, L.T.Bordeanu, C.Goldring, G.Hass, M.Weissman, L.Fedoseyev, V.N.Koster, U.Nir-El, Y.Haquin, G.Gaggeler, H.W.Weinreich, R.A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factorNuclear Physics - ExperimentThe $^{7}$Be(p, $\gamma$) $ \,^{8}$B reaction plays a central role in the evaluation of solar neutrino fluxes. We report on a new precision measurement of the cross section of this reaction, following our previous experiment with an implanted target, a raster scanned beam and the elimination of back-scattering losses. The new measurement incorporates a higher activity $^{7}$Be target and a number of improvements in design and procedure. The cross section at Ec.m. = 850 keV was measured several times under varying experimental conditions, yielding a value of S$_{17}$(Ec.m.=850 keV) = 24.0 $\pm$ 0.5 eV b. Measurements were carried out at lower energies as well. We obtain from the entire set of measurements an extrapolated value of S$_{17}$(0) = 21.2 $\pm$ 0.7 eV b.The 7Be(p,gamma)8B reaction plays a central role in the evaluation of solar neutrino fluxes. We report on a new precision measurement of the cross section of this reaction, following our previous experiment with an implanted target, a raster scanned beam and the elimination of backscattering losses. The new measurement incorporates a higher activity 7Be target and a number of improvements in design and procedure. The cross section at Ec.m. = 850 keV was measured several times under varying expermental conditions, yielding a value of S17(Ec.m.=850 keV) = 24.0 +/- 0.5 eV b. Measurements were carried out at lower energies as well. We obtain from the entire set of measurements an extrapolated value of S17(0) = 21.2 +/- 0.7 eV b.nucl-ex/0212011oai:cds.cern.ch:5962902002-12-11 |
| spellingShingle | Nuclear Physics - Experiment Baby, L.T. Bordeanu, C. Goldring, G. Hass, M. Weissman, L. Fedoseyev, V.N. Koster, U. Nir-El, Y. Haquin, G. Gaggeler, H.W. Weinreich, R. A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title | A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title_full | A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title_fullStr | A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title_full_unstemmed | A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title_short | A new measurement of the proton capture rate on $^{7}$Be and the S$_{17}$(0) factor |
| title_sort | new measurement of the proton capture rate on $^{7}$be and the s$_{17}$(0) factor |
| topic | Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1103/PhysRevC.67.065805 https://dx.doi.org/10.1103/PhysRevC.69.019902 http://cds.cern.ch/record/596290 |
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