One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts

A. Banu; F. Carstoiu; N. L. Achouri; W. N. Catford; M. Chartier; B. Fernández-Domínguez; M. Horoi; B. Laurent; N. A. Orr; S. Paschalis; N. Patterson; B. Pietras; B. T. Roeder; P. Roussel-Chomaz; J. S. Thomas; L. Trache; R. E. Tribble

doi:10.1103/PhysRevC.86.015806

One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts

A. Banu^*, F. Carstoiu, N. L. Achouri, W. N. Catford, M. Chartier, B. Fernández-Domínguez, M. Horoi, B. Laurent, N. A. Orr, S. Paschalis, N. Patterson, B. Pietras, B. T. Roeder, P. Roussel-Chomaz, J. S. Thomas, L. Trache, R. E. Tribble

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Background: To understand explosive hydrogen burning in stars and to explore various explosive scenarios such as type I x-ray bursts (XRBs), reliable reaction rates are needed. The cross sections for radiative proton capture on near-dripline nuclei are necessary for the determination of the reaction rates, but cannot be measured directly. Purpose: To determine the reaction rate for the radiative proton capture reaction 23Al⁽p^,γ ⁾24Si using indirect methods and, as a consequence, evaluate if sequential 2p capture on 22Mg seed nuclei is significant at high temperatures. Method: Nonresonant radiative proton capture on 23Al is investigated using the one-proton breakup of 24Si at 61 MeV/nucleon and the asymptotic normalization coefficient (ANC) for 24Si_gs→23Al+p is deduced. Results: From the ANC, the nonresonant component of the astrophysical S-factor for the 23Al⁽p^,γ⁾24Si reaction is determined and, using other new experimental data the resonant component is re-evaluated. Conclusions: The 23Al⁽p^,γ⁾24Si reaction is of interest for type I XRB nucleosynthesis and its reaction rate can affect both the 22Na abundance and the total energy output. New determinations of the rates for the 22Mg⁽p^,γ⁾23Al ⁽p^,γ⁾24Si reaction chain are provided here and we point to the need that they be included in XRB scenarios.

Original language	English
Article number	015806
Journal	Physical Review C
Volume	86
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.86.015806
Publication status	Published - 17 Jul 2012

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Banu, A., Carstoiu, F., Achouri, N. L., Catford, W. N., Chartier, M., Fernández-Domínguez, B., Horoi, M., Laurent, B., Orr, N. A., Paschalis, S., Patterson, N., Pietras, B., Roeder, B. T., Roussel-Chomaz, P., Thomas, J. S., Trache, L., & Tribble, R. E. (2012). One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts. Physical Review C, 86(1), Article 015806. https://doi.org/10.1103/PhysRevC.86.015806

@article{4e0a3e46dc99424fab33c3b0d26e7262,

title = "One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts",

abstract = "Background: To understand explosive hydrogen burning in stars and to explore various explosive scenarios such as type I x-ray bursts (XRBs), reliable reaction rates are needed. The cross sections for radiative proton capture on near-dripline nuclei are necessary for the determination of the reaction rates, but cannot be measured directly. Purpose: To determine the reaction rate for the radiative proton capture reaction 23Al(p,γ )24Si using indirect methods and, as a consequence, evaluate if sequential 2p capture on 22Mg seed nuclei is significant at high temperatures. Method: Nonresonant radiative proton capture on 23Al is investigated using the one-proton breakup of 24Si at 61 MeV/nucleon and the asymptotic normalization coefficient (ANC) for 24Sigs→23Al+p is deduced. Results: From the ANC, the nonresonant component of the astrophysical S-factor for the 23Al(p,γ)24Si reaction is determined and, using other new experimental data the resonant component is re-evaluated. Conclusions: The 23Al(p,γ)24Si reaction is of interest for type I XRB nucleosynthesis and its reaction rate can affect both the 22Na abundance and the total energy output. New determinations of the rates for the 22Mg(p,γ)23Al (p,γ)24Si reaction chain are provided here and we point to the need that they be included in XRB scenarios.",

author = "A. Banu and F. Carstoiu and Achouri, {N. L.} and Catford, {W. N.} and M. Chartier and B. Fern{\'a}ndez-Dom{\'i}nguez and M. Horoi and B. Laurent and Orr, {N. A.} and S. Paschalis and N. Patterson and B. Pietras and Roeder, {B. T.} and P. Roussel-Chomaz and Thomas, {J. S.} and L. Trache and Tribble, {R. E.}",

year = "2012",

month = jul,

day = "17",

doi = "10.1103/PhysRevC.86.015806",

language = "English",

volume = "86",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

number = "1",

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Banu, A, Carstoiu, F, Achouri, NL, Catford, WN, Chartier, M, Fernández-Domínguez, B, Horoi, M, Laurent, B, Orr, NA, Paschalis, S, Patterson, N, Pietras, B, Roeder, BT, Roussel-Chomaz, P, Thomas, JS, Trache, L & Tribble, RE 2012, 'One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts', Physical Review C, vol. 86, no. 1, 015806. https://doi.org/10.1103/PhysRevC.86.015806

TY - JOUR

T1 - One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts

AU - Banu, A.

AU - Carstoiu, F.

AU - Achouri, N. L.

AU - Catford, W. N.

AU - Chartier, M.

AU - Fernández-Domínguez, B.

AU - Horoi, M.

AU - Laurent, B.

AU - Orr, N. A.

AU - Paschalis, S.

AU - Patterson, N.

AU - Pietras, B.

AU - Roeder, B. T.

AU - Roussel-Chomaz, P.

AU - Thomas, J. S.

AU - Trache, L.

AU - Tribble, R. E.

PY - 2012/7/17

Y1 - 2012/7/17

N2 - Background: To understand explosive hydrogen burning in stars and to explore various explosive scenarios such as type I x-ray bursts (XRBs), reliable reaction rates are needed. The cross sections for radiative proton capture on near-dripline nuclei are necessary for the determination of the reaction rates, but cannot be measured directly. Purpose: To determine the reaction rate for the radiative proton capture reaction 23Al(p,γ )24Si using indirect methods and, as a consequence, evaluate if sequential 2p capture on 22Mg seed nuclei is significant at high temperatures. Method: Nonresonant radiative proton capture on 23Al is investigated using the one-proton breakup of 24Si at 61 MeV/nucleon and the asymptotic normalization coefficient (ANC) for 24Sigs→23Al+p is deduced. Results: From the ANC, the nonresonant component of the astrophysical S-factor for the 23Al(p,γ)24Si reaction is determined and, using other new experimental data the resonant component is re-evaluated. Conclusions: The 23Al(p,γ)24Si reaction is of interest for type I XRB nucleosynthesis and its reaction rate can affect both the 22Na abundance and the total energy output. New determinations of the rates for the 22Mg(p,γ)23Al (p,γ)24Si reaction chain are provided here and we point to the need that they be included in XRB scenarios.

AB - Background: To understand explosive hydrogen burning in stars and to explore various explosive scenarios such as type I x-ray bursts (XRBs), reliable reaction rates are needed. The cross sections for radiative proton capture on near-dripline nuclei are necessary for the determination of the reaction rates, but cannot be measured directly. Purpose: To determine the reaction rate for the radiative proton capture reaction 23Al(p,γ )24Si using indirect methods and, as a consequence, evaluate if sequential 2p capture on 22Mg seed nuclei is significant at high temperatures. Method: Nonresonant radiative proton capture on 23Al is investigated using the one-proton breakup of 24Si at 61 MeV/nucleon and the asymptotic normalization coefficient (ANC) for 24Sigs→23Al+p is deduced. Results: From the ANC, the nonresonant component of the astrophysical S-factor for the 23Al(p,γ)24Si reaction is determined and, using other new experimental data the resonant component is re-evaluated. Conclusions: The 23Al(p,γ)24Si reaction is of interest for type I XRB nucleosynthesis and its reaction rate can affect both the 22Na abundance and the total energy output. New determinations of the rates for the 22Mg(p,γ)23Al (p,γ)24Si reaction chain are provided here and we point to the need that they be included in XRB scenarios.

UR - http://www.scopus.com/inward/record.url?scp=84864403847&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.86.015806

DO - 10.1103/PhysRevC.86.015806

M3 - Article

AN - SCOPUS:84864403847

SN - 0556-2813

VL - 86

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 015806

ER -

One-proton breakup of 24Si and the 23Al(p,γ)24Si reaction in type i x-ray bursts

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