Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies

M. Mazzocco, N. Keeley, A. Boiano, C. Boiano, M. La Commara, C. Manea, C. Parascandolo, D. Pierroutsakou, C. Signorini, E. Strano, D. Torresi, H. Yamaguchi, D. Kahl, L. Acosta, P. Di Meo, J. P. Fernandez-Garcia, T. Glodariu, J. Grebosz, A. Guglielmetti, Y. HirayamaN. Imai, H. Ishiyama, N. Iwasa, S. C. Jeong, H. M. Jia, Y. H. Kim, S. Kimura, S. Kubono, G. La Rana, C. J. Lin, P. Lotti, G. Marquínez-Durán, I. Martel, H. Miyatake, M. Mukai, T. Nakao, M. Nicoletto, A. Pakou, K. Rusek, Y. Sakaguchi, A. M. Sánchez-Benítez, T. Sava, O. Sgouros, V. Soukeras, F. Soramel, E. Stiliaris, L. Stroe, T. Teranishi, N. Toniolo, Y. Wakabayashi, Y. X. Watanabe, L. Yang, Y. Y. Yang, H. Q. Zhang

Research output: Contribution to journalArticle

Abstract

The elastic scattering of the weakly bound radioactive nuclei B8 and Be7 from a Pb208 target was measured for the first time in the energy range around the Coulomb barrier. The data were analyzed using the optical model and the continuum discretized coupled channels (CDCC) formalisms. The reaction cross sections extracted from the optical model fits clearly indicate a remarkably enhanced reaction probability for the very weakly bound B8 (Sp=137.5keV) compared to similar mass nuclei interacting with the same target nucleus. CDCC calculations assuming a He3+He4 cluster model well described the Be7 experimental elastic scattering angular distributions, whereas the use of a Be7+p cluster model of B8 with an inert Be7 core gave a relatively poor description of the corresponding experimental data, suggesting that this model may be too simplistic and the possibility of core excitation should not be ignored.

Original languageEnglish
Article number024602
JournalPhysical Review C
Volume100
Issue number2
DOIs
Publication statusPublished - Aug 1 2019

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elastic scattering
nuclei
energy
continuums
angular distribution
cross sections
excitation

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Mazzocco, M., Keeley, N., Boiano, A., Boiano, C., La Commara, M., Manea, C., ... Zhang, H. Q. (2019). Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies. Physical Review C, 100(2), [024602]. https://doi.org/10.1103/PhysRevC.100.024602

Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies. / Mazzocco, M.; Keeley, N.; Boiano, A.; Boiano, C.; La Commara, M.; Manea, C.; Parascandolo, C.; Pierroutsakou, D.; Signorini, C.; Strano, E.; Torresi, D.; Yamaguchi, H.; Kahl, D.; Acosta, L.; Di Meo, P.; Fernandez-Garcia, J. P.; Glodariu, T.; Grebosz, J.; Guglielmetti, A.; Hirayama, Y.; Imai, N.; Ishiyama, H.; Iwasa, N.; Jeong, S. C.; Jia, H. M.; Kim, Y. H.; Kimura, S.; Kubono, S.; La Rana, G.; Lin, C. J.; Lotti, P.; Marquínez-Durán, G.; Martel, I.; Miyatake, H.; Mukai, M.; Nakao, T.; Nicoletto, M.; Pakou, A.; Rusek, K.; Sakaguchi, Y.; Sánchez-Benítez, A. M.; Sava, T.; Sgouros, O.; Soukeras, V.; Soramel, F.; Stiliaris, E.; Stroe, L.; Teranishi, T.; Toniolo, N.; Wakabayashi, Y.; Watanabe, Y. X.; Yang, L.; Yang, Y. Y.; Zhang, H. Q.

In: Physical Review C, Vol. 100, No. 2, 024602, 01.08.2019.

Research output: Contribution to journalArticle

Mazzocco, M, Keeley, N, Boiano, A, Boiano, C, La Commara, M, Manea, C, Parascandolo, C, Pierroutsakou, D, Signorini, C, Strano, E, Torresi, D, Yamaguchi, H, Kahl, D, Acosta, L, Di Meo, P, Fernandez-Garcia, JP, Glodariu, T, Grebosz, J, Guglielmetti, A, Hirayama, Y, Imai, N, Ishiyama, H, Iwasa, N, Jeong, SC, Jia, HM, Kim, YH, Kimura, S, Kubono, S, La Rana, G, Lin, CJ, Lotti, P, Marquínez-Durán, G, Martel, I, Miyatake, H, Mukai, M, Nakao, T, Nicoletto, M, Pakou, A, Rusek, K, Sakaguchi, Y, Sánchez-Benítez, AM, Sava, T, Sgouros, O, Soukeras, V, Soramel, F, Stiliaris, E, Stroe, L, Teranishi, T, Toniolo, N, Wakabayashi, Y, Watanabe, YX, Yang, L, Yang, YY & Zhang, HQ 2019, 'Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies', Physical Review C, vol. 100, no. 2, 024602. https://doi.org/10.1103/PhysRevC.100.024602
Mazzocco M, Keeley N, Boiano A, Boiano C, La Commara M, Manea C et al. Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies. Physical Review C. 2019 Aug 1;100(2). 024602. https://doi.org/10.1103/PhysRevC.100.024602
Mazzocco, M. ; Keeley, N. ; Boiano, A. ; Boiano, C. ; La Commara, M. ; Manea, C. ; Parascandolo, C. ; Pierroutsakou, D. ; Signorini, C. ; Strano, E. ; Torresi, D. ; Yamaguchi, H. ; Kahl, D. ; Acosta, L. ; Di Meo, P. ; Fernandez-Garcia, J. P. ; Glodariu, T. ; Grebosz, J. ; Guglielmetti, A. ; Hirayama, Y. ; Imai, N. ; Ishiyama, H. ; Iwasa, N. ; Jeong, S. C. ; Jia, H. M. ; Kim, Y. H. ; Kimura, S. ; Kubono, S. ; La Rana, G. ; Lin, C. J. ; Lotti, P. ; Marquínez-Durán, G. ; Martel, I. ; Miyatake, H. ; Mukai, M. ; Nakao, T. ; Nicoletto, M. ; Pakou, A. ; Rusek, K. ; Sakaguchi, Y. ; Sánchez-Benítez, A. M. ; Sava, T. ; Sgouros, O. ; Soukeras, V. ; Soramel, F. ; Stiliaris, E. ; Stroe, L. ; Teranishi, T. ; Toniolo, N. ; Wakabayashi, Y. ; Watanabe, Y. X. ; Yang, L. ; Yang, Y. Y. ; Zhang, H. Q. / Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies. In: Physical Review C. 2019 ; Vol. 100, No. 2.
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title = "Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies",
abstract = "The elastic scattering of the weakly bound radioactive nuclei B8 and Be7 from a Pb208 target was measured for the first time in the energy range around the Coulomb barrier. The data were analyzed using the optical model and the continuum discretized coupled channels (CDCC) formalisms. The reaction cross sections extracted from the optical model fits clearly indicate a remarkably enhanced reaction probability for the very weakly bound B8 (Sp=137.5keV) compared to similar mass nuclei interacting with the same target nucleus. CDCC calculations assuming a He3+He4 cluster model well described the Be7 experimental elastic scattering angular distributions, whereas the use of a Be7+p cluster model of B8 with an inert Be7 core gave a relatively poor description of the corresponding experimental data, suggesting that this model may be too simplistic and the possibility of core excitation should not be ignored.",
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T1 - Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies

AU - Mazzocco, M.

AU - Keeley, N.

AU - Boiano, A.

AU - Boiano, C.

AU - La Commara, M.

AU - Manea, C.

AU - Parascandolo, C.

AU - Pierroutsakou, D.

AU - Signorini, C.

AU - Strano, E.

AU - Torresi, D.

AU - Yamaguchi, H.

AU - Kahl, D.

AU - Acosta, L.

AU - Di Meo, P.

AU - Fernandez-Garcia, J. P.

AU - Glodariu, T.

AU - Grebosz, J.

AU - Guglielmetti, A.

AU - Hirayama, Y.

AU - Imai, N.

AU - Ishiyama, H.

AU - Iwasa, N.

AU - Jeong, S. C.

AU - Jia, H. M.

AU - Kim, Y. H.

AU - Kimura, S.

AU - Kubono, S.

AU - La Rana, G.

AU - Lin, C. J.

AU - Lotti, P.

AU - Marquínez-Durán, G.

AU - Martel, I.

AU - Miyatake, H.

AU - Mukai, M.

AU - Nakao, T.

AU - Nicoletto, M.

AU - Pakou, A.

AU - Rusek, K.

AU - Sakaguchi, Y.

AU - Sánchez-Benítez, A. M.

AU - Sava, T.

AU - Sgouros, O.

AU - Soukeras, V.

AU - Soramel, F.

AU - Stiliaris, E.

AU - Stroe, L.

AU - Teranishi, T.

AU - Toniolo, N.

AU - Wakabayashi, Y.

AU - Watanabe, Y. X.

AU - Yang, L.

AU - Yang, Y. Y.

AU - Zhang, H. Q.

PY - 2019/8/1

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N2 - The elastic scattering of the weakly bound radioactive nuclei B8 and Be7 from a Pb208 target was measured for the first time in the energy range around the Coulomb barrier. The data were analyzed using the optical model and the continuum discretized coupled channels (CDCC) formalisms. The reaction cross sections extracted from the optical model fits clearly indicate a remarkably enhanced reaction probability for the very weakly bound B8 (Sp=137.5keV) compared to similar mass nuclei interacting with the same target nucleus. CDCC calculations assuming a He3+He4 cluster model well described the Be7 experimental elastic scattering angular distributions, whereas the use of a Be7+p cluster model of B8 with an inert Be7 core gave a relatively poor description of the corresponding experimental data, suggesting that this model may be too simplistic and the possibility of core excitation should not be ignored.

AB - The elastic scattering of the weakly bound radioactive nuclei B8 and Be7 from a Pb208 target was measured for the first time in the energy range around the Coulomb barrier. The data were analyzed using the optical model and the continuum discretized coupled channels (CDCC) formalisms. The reaction cross sections extracted from the optical model fits clearly indicate a remarkably enhanced reaction probability for the very weakly bound B8 (Sp=137.5keV) compared to similar mass nuclei interacting with the same target nucleus. CDCC calculations assuming a He3+He4 cluster model well described the Be7 experimental elastic scattering angular distributions, whereas the use of a Be7+p cluster model of B8 with an inert Be7 core gave a relatively poor description of the corresponding experimental data, suggesting that this model may be too simplistic and the possibility of core excitation should not be ignored.

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