Elastic scattering of Al 25 +p to explore the resonance structure in Si 26

H. S. Jung, C. S. Lee, Y. K. Kwon, J. Y. Moon, J. H. Lee, C. C. Yun, M. J. Kim, T. Hashimoto, H. Yamaguchi, D. Kahl, S. Kubono, Y. Wakabayashi, Y. Togano, Seonho Choi, Y. H. Kim, Y. K. Kim, J. S. Park, E. J. Kim, C. B. Moon, Takashi Teranishi & 6 others N. Iwasa, T. Yamada, S. Kato, S. Cherubini, S. Hayakawa, G. G. Rapisarda

Research output: Contribution to journalArticle

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Abstract

Background: The properties of resonances in Si26 are important to better constrain the Al25(p,γ)Si26 reaction rate relevant to the synthesis of galactic Al26gs and energy generation in explosive stellar environment at higher temperature. Purpose: Al25+p elastic scattering was measured to further constrain and investigate disagreements in resonance parameters for the high-lying excited states of Si26 with high statistics and without background contamination within the target. Methods: The experiment was performed by bombarding a thick H2 target with an Al25 radioactive ion beam. The resonances at excitation energies of 6.6-8.3 MeV in the Si26 compound nucleus were studied at the low-energy radioactive-ion beam facility CRIB (Center for Nuclear Study Radioactive Ion Beam separator) at the University of Tokyo. Results: Six resonant states were observed and their resonance parameters were extracted by an R-matrix analysis. Our resonance parameters for two levels are in good agreement with the results of previous studies, while for four others, excitation energy, proton partial width, and spin-parity assignment disagree with the results of recent study via elastic scattering of Al25+p. Conclusion: The parameters of resonant states in Si26 determined in the present work for the Al25(p,γ)Si26 reaction rate are consistent with that of the previous result, solving spin-parity assignment discrepancies between experiments, relevant at higher temperatures.

Original languageEnglish
Article number035805
JournalPhysical Review C - Nuclear Physics
Volume90
Issue number3
DOIs
Publication statusPublished - Sep 23 2014

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elastic scattering
ion beams
parity
reaction kinetics
excitation
separators
proton energy
energy
contamination
statistics
nuclei
synthesis

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Jung, H. S., Lee, C. S., Kwon, Y. K., Moon, J. Y., Lee, J. H., Yun, C. C., ... Rapisarda, G. G. (2014). Elastic scattering of Al 25 +p to explore the resonance structure in Si 26. Physical Review C - Nuclear Physics, 90(3), [035805]. https://doi.org/10.1103/PhysRevC.90.035805

Elastic scattering of Al 25 +p to explore the resonance structure in Si 26. / Jung, H. S.; Lee, C. S.; Kwon, Y. K.; Moon, J. Y.; Lee, J. H.; Yun, C. C.; Kim, M. J.; Hashimoto, T.; Yamaguchi, H.; Kahl, D.; Kubono, S.; Wakabayashi, Y.; Togano, Y.; Choi, Seonho; Kim, Y. H.; Kim, Y. K.; Park, J. S.; Kim, E. J.; Moon, C. B.; Teranishi, Takashi; Iwasa, N.; Yamada, T.; Kato, S.; Cherubini, S.; Hayakawa, S.; Rapisarda, G. G.

In: Physical Review C - Nuclear Physics, Vol. 90, No. 3, 035805, 23.09.2014.

Research output: Contribution to journalArticle

Jung, HS, Lee, CS, Kwon, YK, Moon, JY, Lee, JH, Yun, CC, Kim, MJ, Hashimoto, T, Yamaguchi, H, Kahl, D, Kubono, S, Wakabayashi, Y, Togano, Y, Choi, S, Kim, YH, Kim, YK, Park, JS, Kim, EJ, Moon, CB, Teranishi, T, Iwasa, N, Yamada, T, Kato, S, Cherubini, S, Hayakawa, S & Rapisarda, GG 2014, 'Elastic scattering of Al 25 +p to explore the resonance structure in Si 26', Physical Review C - Nuclear Physics, vol. 90, no. 3, 035805. https://doi.org/10.1103/PhysRevC.90.035805
Jung, H. S. ; Lee, C. S. ; Kwon, Y. K. ; Moon, J. Y. ; Lee, J. H. ; Yun, C. C. ; Kim, M. J. ; Hashimoto, T. ; Yamaguchi, H. ; Kahl, D. ; Kubono, S. ; Wakabayashi, Y. ; Togano, Y. ; Choi, Seonho ; Kim, Y. H. ; Kim, Y. K. ; Park, J. S. ; Kim, E. J. ; Moon, C. B. ; Teranishi, Takashi ; Iwasa, N. ; Yamada, T. ; Kato, S. ; Cherubini, S. ; Hayakawa, S. ; Rapisarda, G. G. / Elastic scattering of Al 25 +p to explore the resonance structure in Si 26. In: Physical Review C - Nuclear Physics. 2014 ; Vol. 90, No. 3.
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title = "Elastic scattering of Al 25 +p to explore the resonance structure in Si 26",
abstract = "Background: The properties of resonances in Si26 are important to better constrain the Al25(p,γ)Si26 reaction rate relevant to the synthesis of galactic Al26gs and energy generation in explosive stellar environment at higher temperature. Purpose: Al25+p elastic scattering was measured to further constrain and investigate disagreements in resonance parameters for the high-lying excited states of Si26 with high statistics and without background contamination within the target. Methods: The experiment was performed by bombarding a thick H2 target with an Al25 radioactive ion beam. The resonances at excitation energies of 6.6-8.3 MeV in the Si26 compound nucleus were studied at the low-energy radioactive-ion beam facility CRIB (Center for Nuclear Study Radioactive Ion Beam separator) at the University of Tokyo. Results: Six resonant states were observed and their resonance parameters were extracted by an R-matrix analysis. Our resonance parameters for two levels are in good agreement with the results of previous studies, while for four others, excitation energy, proton partial width, and spin-parity assignment disagree with the results of recent study via elastic scattering of Al25+p. Conclusion: The parameters of resonant states in Si26 determined in the present work for the Al25(p,γ)Si26 reaction rate are consistent with that of the previous result, solving spin-parity assignment discrepancies between experiments, relevant at higher temperatures.",
author = "Jung, {H. S.} and Lee, {C. S.} and Kwon, {Y. K.} and Moon, {J. Y.} and Lee, {J. H.} and Yun, {C. C.} and Kim, {M. J.} and T. Hashimoto and H. Yamaguchi and D. Kahl and S. Kubono and Y. Wakabayashi and Y. Togano and Seonho Choi and Kim, {Y. H.} and Kim, {Y. K.} and Park, {J. S.} and Kim, {E. J.} and Moon, {C. B.} and Takashi Teranishi and N. Iwasa and T. Yamada and S. Kato and S. Cherubini and S. Hayakawa and Rapisarda, {G. G.}",
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AU - Jung, H. S.

AU - Lee, C. S.

AU - Kwon, Y. K.

AU - Moon, J. Y.

AU - Lee, J. H.

AU - Yun, C. C.

AU - Kim, M. J.

AU - Hashimoto, T.

AU - Yamaguchi, H.

AU - Kahl, D.

AU - Kubono, S.

AU - Wakabayashi, Y.

AU - Togano, Y.

AU - Choi, Seonho

AU - Kim, Y. H.

AU - Kim, Y. K.

AU - Park, J. S.

AU - Kim, E. J.

AU - Moon, C. B.

AU - Teranishi, Takashi

AU - Iwasa, N.

AU - Yamada, T.

AU - Kato, S.

AU - Cherubini, S.

AU - Hayakawa, S.

AU - Rapisarda, G. G.

PY - 2014/9/23

Y1 - 2014/9/23

N2 - Background: The properties of resonances in Si26 are important to better constrain the Al25(p,γ)Si26 reaction rate relevant to the synthesis of galactic Al26gs and energy generation in explosive stellar environment at higher temperature. Purpose: Al25+p elastic scattering was measured to further constrain and investigate disagreements in resonance parameters for the high-lying excited states of Si26 with high statistics and without background contamination within the target. Methods: The experiment was performed by bombarding a thick H2 target with an Al25 radioactive ion beam. The resonances at excitation energies of 6.6-8.3 MeV in the Si26 compound nucleus were studied at the low-energy radioactive-ion beam facility CRIB (Center for Nuclear Study Radioactive Ion Beam separator) at the University of Tokyo. Results: Six resonant states were observed and their resonance parameters were extracted by an R-matrix analysis. Our resonance parameters for two levels are in good agreement with the results of previous studies, while for four others, excitation energy, proton partial width, and spin-parity assignment disagree with the results of recent study via elastic scattering of Al25+p. Conclusion: The parameters of resonant states in Si26 determined in the present work for the Al25(p,γ)Si26 reaction rate are consistent with that of the previous result, solving spin-parity assignment discrepancies between experiments, relevant at higher temperatures.

AB - Background: The properties of resonances in Si26 are important to better constrain the Al25(p,γ)Si26 reaction rate relevant to the synthesis of galactic Al26gs and energy generation in explosive stellar environment at higher temperature. Purpose: Al25+p elastic scattering was measured to further constrain and investigate disagreements in resonance parameters for the high-lying excited states of Si26 with high statistics and without background contamination within the target. Methods: The experiment was performed by bombarding a thick H2 target with an Al25 radioactive ion beam. The resonances at excitation energies of 6.6-8.3 MeV in the Si26 compound nucleus were studied at the low-energy radioactive-ion beam facility CRIB (Center for Nuclear Study Radioactive Ion Beam separator) at the University of Tokyo. Results: Six resonant states were observed and their resonance parameters were extracted by an R-matrix analysis. Our resonance parameters for two levels are in good agreement with the results of previous studies, while for four others, excitation energy, proton partial width, and spin-parity assignment disagree with the results of recent study via elastic scattering of Al25+p. Conclusion: The parameters of resonant states in Si26 determined in the present work for the Al25(p,γ)Si26 reaction rate are consistent with that of the previous result, solving spin-parity assignment discrepancies between experiments, relevant at higher temperatures.

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