First direct measurement of the C 11 (α,p) N 14 stellar reaction by an extended thick-target method

S. Hayakawa, S. Kubono, D. Kahl, H. Yamaguchi, D. N. Binh, T. Hashimoto, Y. Wakabayashi, J. J. He, N. Iwasa, S. Kato, T. Komatsubara, Y. K. Kwon, T. Teranishi

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)

抄録

The C11(α,p)14N reaction is an important α-induced reaction competing with β-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition (α,p0) and the excited-state transitions (α,p1) and (α,p2) at relevant stellar energies 1.3-4.5 MeV by an extended thick-target method featuring time of flight for the first time. We revised the reaction rate by numerical integration including the (α,p1) and (α,p2) contributions and also low-lying resonances of (α,p0) using both the present and the previous experimental data which were totally neglected in the previous compilation works. The present total reaction rate lies between the previous (α,p0) rate and the total rate of the Hauser-Feshbach statistical model calculation, which is consistent with the relevant explosive hydrogen-burning scenarios such as the νp process.

元の言語英語
記事番号065802
ジャーナルPhysical Review C
93
発行部数6
DOI
出版物ステータス出版済み - 6 7 2016

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reaction kinetics
hydrogen
numerical integration
stars
ground state
cross sections
excitation
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

これを引用

First direct measurement of the C 11 (α,p) N 14 stellar reaction by an extended thick-target method. / Hayakawa, S.; Kubono, S.; Kahl, D.; Yamaguchi, H.; Binh, D. N.; Hashimoto, T.; Wakabayashi, Y.; He, J. J.; Iwasa, N.; Kato, S.; Komatsubara, T.; Kwon, Y. K.; Teranishi, T.

:: Physical Review C, 巻 93, 番号 6, 065802, 07.06.2016.

研究成果: ジャーナルへの寄稿記事

Hayakawa, S, Kubono, S, Kahl, D, Yamaguchi, H, Binh, DN, Hashimoto, T, Wakabayashi, Y, He, JJ, Iwasa, N, Kato, S, Komatsubara, T, Kwon, YK & Teranishi, T 2016, 'First direct measurement of the C 11 (α,p) N 14 stellar reaction by an extended thick-target method', Physical Review C, 巻. 93, 番号 6, 065802. https://doi.org/10.1103/PhysRevC.93.065802
Hayakawa, S. ; Kubono, S. ; Kahl, D. ; Yamaguchi, H. ; Binh, D. N. ; Hashimoto, T. ; Wakabayashi, Y. ; He, J. J. ; Iwasa, N. ; Kato, S. ; Komatsubara, T. ; Kwon, Y. K. ; Teranishi, T. / First direct measurement of the C 11 (α,p) N 14 stellar reaction by an extended thick-target method. :: Physical Review C. 2016 ; 巻 93, 番号 6.
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abstract = "The C11(α,p)14N reaction is an important α-induced reaction competing with β-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition (α,p0) and the excited-state transitions (α,p1) and (α,p2) at relevant stellar energies 1.3-4.5 MeV by an extended thick-target method featuring time of flight for the first time. We revised the reaction rate by numerical integration including the (α,p1) and (α,p2) contributions and also low-lying resonances of (α,p0) using both the present and the previous experimental data which were totally neglected in the previous compilation works. The present total reaction rate lies between the previous (α,p0) rate and the total rate of the Hauser-Feshbach statistical model calculation, which is consistent with the relevant explosive hydrogen-burning scenarios such as the νp process.",
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AU - Hayakawa, S.

AU - Kubono, S.

AU - Kahl, D.

AU - Yamaguchi, H.

AU - Binh, D. N.

AU - Hashimoto, T.

AU - Wakabayashi, Y.

AU - He, J. J.

AU - Iwasa, N.

AU - Kato, S.

AU - Komatsubara, T.

AU - Kwon, Y. K.

AU - Teranishi, T.

PY - 2016/6/7

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N2 - The C11(α,p)14N reaction is an important α-induced reaction competing with β-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition (α,p0) and the excited-state transitions (α,p1) and (α,p2) at relevant stellar energies 1.3-4.5 MeV by an extended thick-target method featuring time of flight for the first time. We revised the reaction rate by numerical integration including the (α,p1) and (α,p2) contributions and also low-lying resonances of (α,p0) using both the present and the previous experimental data which were totally neglected in the previous compilation works. The present total reaction rate lies between the previous (α,p0) rate and the total rate of the Hauser-Feshbach statistical model calculation, which is consistent with the relevant explosive hydrogen-burning scenarios such as the νp process.

AB - The C11(α,p)14N reaction is an important α-induced reaction competing with β-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition (α,p0) and the excited-state transitions (α,p1) and (α,p2) at relevant stellar energies 1.3-4.5 MeV by an extended thick-target method featuring time of flight for the first time. We revised the reaction rate by numerical integration including the (α,p1) and (α,p2) contributions and also low-lying resonances of (α,p0) using both the present and the previous experimental data which were totally neglected in the previous compilation works. The present total reaction rate lies between the previous (α,p0) rate and the total rate of the Hauser-Feshbach statistical model calculation, which is consistent with the relevant explosive hydrogen-burning scenarios such as the νp process.

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