Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8

F. Schümann; S. Typel; F. Hammache; K. Sümmerer; F. Uhlig; I. Böttcher; D. Cortina; A. Förster; M. Gai; H. Geissel; U. Greife; E. Grosse; N. Iwasa; P. Koczoń; B. Kohlmeyer; R. Kulessa; H. Kumagai; N. Kurz; M. Menzel; T. Motobayashi; H. Oeschler; A. Ozawa; M. Płoskoń; W. Prokopowicz; E. Schwab; P. Senger; F. Strieder; C. Sturm; Zhi Yu Sun; G. Surówka; A. Wagner; W. Walú

doi:10.1103/PhysRevC.73.015806

Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8

F. Schümann, S. Typel, F. Hammache, K. Sümmerer, F. Uhlig, I. Böttcher, D. Cortina, A. Förster, M. Gai, H. Geissel, U. Greife, E. Grosse, N. Iwasa, P. Koczoń, B. Kohlmeyer, R. Kulessa, H. Kumagai, N. Kurz, M. Menzel, T. MotobayashiH. Oeschler, A. Ozawa, M. Płoskoń, W. Prokopowicz, E. Schwab, P. Senger, F. Strieder, C. Sturm, Zhi Yu Sun, G. Surówka, A. Wagner, W. Walú

SCI - Physics

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Abstract

An exclusive measurement of the Coulomb breakup of B8 into Be7+p at 254A MeV was used to infer the low-energy Be7(p,γ)B8 cross section. The radioactive B8 beam was produced by projectile fragmentation of 350A MeV C12 and separated with the FRagment Separator (FRS) at Gesellschaft für Schwerionenforschung in Darmstadt, Germany. The Coulomb-breakup products were momentum-analyzed in the KaoS magnetic spectrometer; particular emphasis was placed on the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates within the angular cuts selected for the analysis. The deduced astrophysical S17 factors exhibit good agreement with the most recent direct Be7(p,γ)B8 measurements. By using the energy dependence of S17 according to the recently refined cluster model for B8 of P. Descouvemont [Phys. Rev. C 70, 065802 (2004)], we extract a zero-energy S factor of S17(0)=20.6±0.8(stat)±1.2(syst) eV b. These errors do not include the uncertainty of the theoretical model to extrapolate to zero relative energy, estimated by Descouvemont to be about 5%.

Original language	English
Article number	015806
Journal	Physical Review C - Nuclear Physics
Volume	73
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.73.015806
Publication status	Published - 2006 Jan

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.73.015806

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Schümann, F., Typel, S., Hammache, F., Sümmerer, K., Uhlig, F., Böttcher, I., Cortina, D., Förster, A., Gai, M., Geissel, H., Greife, U., Grosse, E., Iwasa, N., Koczoń, P., Kohlmeyer, B., Kulessa, R., Kumagai, H., Kurz, N., Menzel, M., ... Walú, W. (2006). Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8. Physical Review C - Nuclear Physics, 73(1), [015806]. https://doi.org/10.1103/PhysRevC.73.015806

Schümann, F, Typel, S, Hammache, F, Sümmerer, K, Uhlig, F, Böttcher, I, Cortina, D, Förster, A, Gai, M, Geissel, H, Greife, U, Grosse, E, Iwasa, N, Koczoń, P, Kohlmeyer, B, Kulessa, R, Kumagai, H, Kurz, N, Menzel, M, Motobayashi, T, Oeschler, H, Ozawa, A, Płoskoń, M, Prokopowicz, W, Schwab, E, Senger, P, Strieder, F, Sturm, C, Sun, ZY, Surówka, G, Wagner, A & Walú, W 2006, 'Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8', Physical Review C - Nuclear Physics, vol. 73, no. 1, 015806. https://doi.org/10.1103/PhysRevC.73.015806

@article{cfdd6f72459c434aa72ff6312b383dd3,

title = "Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8",

abstract = "An exclusive measurement of the Coulomb breakup of B8 into Be7+p at 254A MeV was used to infer the low-energy Be7(p,γ)B8 cross section. The radioactive B8 beam was produced by projectile fragmentation of 350A MeV C12 and separated with the FRagment Separator (FRS) at Gesellschaft f{\"u}r Schwerionenforschung in Darmstadt, Germany. The Coulomb-breakup products were momentum-analyzed in the KaoS magnetic spectrometer; particular emphasis was placed on the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates within the angular cuts selected for the analysis. The deduced astrophysical S17 factors exhibit good agreement with the most recent direct Be7(p,γ)B8 measurements. By using the energy dependence of S17 according to the recently refined cluster model for B8 of P. Descouvemont [Phys. Rev. C 70, 065802 (2004)], we extract a zero-energy S factor of S17(0)=20.6±0.8(stat)±1.2(syst) eV b. These errors do not include the uncertainty of the theoretical model to extrapolate to zero relative energy, estimated by Descouvemont to be about 5%.",

author = "F. Sch{\"u}mann and S. Typel and F. Hammache and K. S{\"u}mmerer and F. Uhlig and I. B{\"o}ttcher and D. Cortina and A. F{\"o}rster and M. Gai and H. Geissel and U. Greife and E. Grosse and N. Iwasa and P. Koczo{\'n} and B. Kohlmeyer and R. Kulessa and H. Kumagai and N. Kurz and M. Menzel and T. Motobayashi and H. Oeschler and A. Ozawa and M. P{\l}osko{\'n} and W. Prokopowicz and E. Schwab and P. Senger and F. Strieder and C. Sturm and Sun, {Zhi Yu} and G. Sur{\'o}wka and A. Wagner and W. Wal{\'u}",

year = "2006",

month = jan,

doi = "10.1103/PhysRevC.73.015806",

language = "English",

volume = "73",

journal = "Physical Review C - Nuclear Physics",

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T1 - Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8

AU - Schümann, F.

AU - Typel, S.

AU - Hammache, F.

AU - Sümmerer, K.

AU - Uhlig, F.

AU - Böttcher, I.

AU - Cortina, D.

AU - Förster, A.

AU - Gai, M.

AU - Geissel, H.

AU - Greife, U.

AU - Grosse, E.

AU - Iwasa, N.

AU - Koczoń, P.

AU - Kohlmeyer, B.

AU - Kulessa, R.

AU - Kumagai, H.

AU - Kurz, N.

AU - Menzel, M.

AU - Motobayashi, T.

AU - Oeschler, H.

AU - Ozawa, A.

AU - Płoskoń, M.

AU - Prokopowicz, W.

AU - Schwab, E.

AU - Senger, P.

AU - Strieder, F.

AU - Sturm, C.

AU - Sun, Zhi Yu

AU - Surówka, G.

AU - Wagner, A.

AU - Walú, W.

PY - 2006/1

Y1 - 2006/1

N2 - An exclusive measurement of the Coulomb breakup of B8 into Be7+p at 254A MeV was used to infer the low-energy Be7(p,γ)B8 cross section. The radioactive B8 beam was produced by projectile fragmentation of 350A MeV C12 and separated with the FRagment Separator (FRS) at Gesellschaft für Schwerionenforschung in Darmstadt, Germany. The Coulomb-breakup products were momentum-analyzed in the KaoS magnetic spectrometer; particular emphasis was placed on the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates within the angular cuts selected for the analysis. The deduced astrophysical S17 factors exhibit good agreement with the most recent direct Be7(p,γ)B8 measurements. By using the energy dependence of S17 according to the recently refined cluster model for B8 of P. Descouvemont [Phys. Rev. C 70, 065802 (2004)], we extract a zero-energy S factor of S17(0)=20.6±0.8(stat)±1.2(syst) eV b. These errors do not include the uncertainty of the theoretical model to extrapolate to zero relative energy, estimated by Descouvemont to be about 5%.

AB - An exclusive measurement of the Coulomb breakup of B8 into Be7+p at 254A MeV was used to infer the low-energy Be7(p,γ)B8 cross section. The radioactive B8 beam was produced by projectile fragmentation of 350A MeV C12 and separated with the FRagment Separator (FRS) at Gesellschaft für Schwerionenforschung in Darmstadt, Germany. The Coulomb-breakup products were momentum-analyzed in the KaoS magnetic spectrometer; particular emphasis was placed on the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates within the angular cuts selected for the analysis. The deduced astrophysical S17 factors exhibit good agreement with the most recent direct Be7(p,γ)B8 measurements. By using the energy dependence of S17 according to the recently refined cluster model for B8 of P. Descouvemont [Phys. Rev. C 70, 065802 (2004)], we extract a zero-energy S factor of S17(0)=20.6±0.8(stat)±1.2(syst) eV b. These errors do not include the uncertainty of the theoretical model to extrapolate to zero relative energy, estimated by Descouvemont to be about 5%.

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DO - 10.1103/PhysRevC.73.015806

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SN - 0556-2813

VL - 73

JO - Physical Review C - Nuclear Physics

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IS - 1

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ER -

Low-energy cross section of the Be7(p,γ)B8 solar fusion reaction from the Coulomb dissociation of B8

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