First inverse kinematics measurement of resonances in $^{7}\mathrm{Be}$($\ensuremath{\alpha},\ensuremath{\gamma})^{11}\mathrm{C}$ relevant to neutrino-driven wind nucleosynthesis using DRAGON

First inverse kinematics measurement of resonances in ${}^{7}{Be}$ ( $α, γ) {}^{11}C$ relevant to neutrino-driven wind nucleosynthesis using DRAGON

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. C 106, 045805 – Published 14 October 2022

Abstract

A possible mechanism to explain the origin of the light $p$ nuclei in the Galaxy is the nucleosynthesis in the proton-rich neutrino-driven wind ejecta of core-collapse supernovas via the $ν p$ process. However, this production scenario is very sensitive to the underlying supernova dynamics and the nuclear physics input. As far as the nuclear uncertainties are concerned, the breakout from the $p p$ chains via the ${}^{7}{Be} (α, γ) {}^{11}C$ reaction has been identified as an important link which can influence the nuclear flow and, therefore, the efficiency of the $ν p$ process. However, its reaction rate is poorly known over the relevant temperature range, $T$ = 1.5–3 GK. We report on the first direct measurement of two resonances of the ${}^{7}{Be} (α, γ) {}^{11}C$ reaction with previously unknown strengths using an intense radioactive ${}^{7}{Be}$ beam from the Isotope Separator and Accelerator (ISAC-I) Center facility and the DRAGON recoil separator in inverse kinematics. We have decreased the ${}^{7}{Be} (α, γ) {}^{11}C$ reaction rate uncertainty to $\approx 9.4 – 10.7$ % over the relevant temperature region.

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Received 31 December 2021
Revised 1 July 2022
Accepted 12 September 2022

DOI:https://doi.org/10.1103/PhysRevC.106.045805

Physics Subject Headings (PhySH)

Direct reactions Nuclear astrophysics Nuclear physics of explosive environments Nuclear reactions Nucleosynthesis in explosive environments Radiative capture

6 ≤ A ≤ 19

Radioactive beams Spectrometers & spectroscopic techniques

Nuclear Physics

Authors & Affiliations

A. Psaltis ^1,2,*, A. A. Chen^1,2, R. Longland^3,4, D. S. Connolly ^5,†, C. R. Brune ⁶, B. Davids^5,7, J. Fallis ⁸, R. Giri⁶, U. Greife ⁹, D. A. Hutcheon⁵, L. Kroll ^1,2, A. Lennarz ⁵, J. Liang^1,‡, M. Lovely ⁹, M. Luo ¹⁰, C. Marshall^3,4,§, S. N. Paneru ^6,∥, A. Parikh ¹¹, C. Ruiz^5,12, A. C. Shotter¹³, and M. Williams^5,14

¹Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
²The NuGrid Collaboration, https://nugrid.github.io/
³Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
⁴Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27710, USA
⁵TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
⁶Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
⁷Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
⁸North Island College, 2300 Ryan Road, Courtenay, British Columbia V9N 8N6, Canada
⁹Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA
¹⁰Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
¹¹Department de Física, Universitat Politècnica de Catalunya, E-08036 Barcelona, Spain
¹²Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8W 2Y2, Canada
¹³School of Physics, University of Edinburgh EH9 3JZ Edinburgh, United Kingdom
¹⁴Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom

^*Present address: Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; psaltisa@mcmaster.ca
^†Present address: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
^‡Present address: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
^§Present address: Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA.
^∥Facility for Rare Isotope Beams, East Lansing, Michigan 48824, USA.

Direct Measurement of Resonances in ${}^{7}{Be} (α, γ) {}^{11}C$ Relevant to $ν p$ -Process Nucleosynthesis

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. Lett. 129, 162701 (2022)

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Vol. 106, Iss. 4 — October 2022

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Physical Review C

covering nuclear physics

First inverse kinematics measurement of resonances in ${}^{7}{Be}$ ( $α, γ) {}^{11}C$ relevant to neutrino-driven wind nucleosynthesis using DRAGON

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. C 106, 045805 – Published 14 October 2022

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

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Direct Measurement of Resonances in ${}^{7}{Be} (α, γ) {}^{11}C$ Relevant to $ν p$ -Process Nucleosynthesis

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. Lett. 129, 162701 (2022)

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Physical Review C

covering nuclear physics

First inverse kinematics measurement of resonances in Be7(α,γ)C11 relevant to neutrino-driven wind nucleosynthesis using DRAGON

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. C 106, 045805 – Published 14 October 2022

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

See Also

Direct Measurement of Resonances in Be7(α,γ)C11 Relevant to νp-Process Nucleosynthesis

A. Psaltis, A. A. Chen, R. Longland, D. S. Connolly, C. R. Brune, B. Davids, J. Fallis, R. Giri, U. Greife, D. A. Hutcheon, L. Kroll, A. Lennarz, J. Liang, M. Lovely, M. Luo, C. Marshall, S. N. Paneru, A. Parikh, C. Ruiz, A. C. Shotter, and M. Williams

Phys. Rev. Lett. 129, 162701 (2022)

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First inverse kinematics measurement of resonances in ${}^{7}{Be}$ ( $α, γ) {}^{11}C$ relevant to neutrino-driven wind nucleosynthesis using DRAGON

Direct Measurement of Resonances in ${}^{7}{Be} (α, γ) {}^{11}C$ Relevant to $ν p$ -Process Nucleosynthesis