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deBoer RJ, Febbraro M, Bardayan DW, Boomershine C, Brandenburg K, Brune C, Coil S, Couder M, Derkin J, Dede S, Fang R, Fritsch A, Gula A, Gyürky G, Hackett B, Hamad G, Jones-Alberty Y, Kelmar R, Manukyan K, Matney M, McDonaugh J, Meisel Z, Moylan S, Nattress J, Odell D, O'Malley P, Paris MW, Robertson D, Shahina, Singh N, Smith K, Smith MS, Stech E, Tan W, Wiescher M. Measurement of the ^{13}C(α, n_{0})^{16}O Differential Cross Section from 0.8 to 6.5 MeV. Phys Rev Lett 2024; 132:062702. [PMID: 38394565 DOI: 10.1103/physrevlett.132.062702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 09/05/2023] [Accepted: 01/17/2024] [Indexed: 02/25/2024]
Abstract
The cross section of the ^{13}C(α,n)^{16}O reaction is needed for nuclear astrophysics and applications to a precision of 10% or better, yet inconsistencies among 50 years of experimental studies currently lead to an uncertainty of ≈15%. Using a state-of-the-art neutron detection array, we have performed a high resolution differential cross section study covering a broad energy range. These measurements result in a dramatic improvement in the extrapolation of the cross section to stellar energies potentially reducing the uncertainty to ≈5% and resolving long standing discrepancies in higher energy data.
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Affiliation(s)
- R J deBoer
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Febbraro
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D W Bardayan
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - C Boomershine
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - K Brandenburg
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - C Brune
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - S Coil
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Couder
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J Derkin
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - S Dede
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - R Fang
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Fritsch
- Department of Physics, Gonzaga University, Spokane, Washington 99258, USA
| | - A Gula
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Gy Gyürky
- Institute for Nuclear Research (Atomki), P.O.B 51, H-4001 Debrecen, Hungary
| | - B Hackett
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - G Hamad
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - Y Jones-Alberty
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - R Kelmar
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - K Manukyan
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Matney
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J McDonaugh
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Z Meisel
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - S Moylan
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J Nattress
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D Odell
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - P O'Malley
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M W Paris
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Robertson
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Shahina
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - N Singh
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - K Smith
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M S Smith
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - E Stech
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - W Tan
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Wiescher
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
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Dombos AC, Robertson D, Simon A, Kadlecek T, Hanhardt M, Görres J, Couder M, Kelmar R, Olivas-Gomez O, Stech E, Strieder F, Wiescher M. Measurement of Low-Energy Resonance Strengths in the ^{18}O(α,γ)^{22}Ne Reaction. Phys Rev Lett 2022; 128:162701. [PMID: 35522496 DOI: 10.1103/physrevlett.128.162701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/21/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
The ^{18}O(α,γ)^{22}Ne reaction is an essential part of a reaction chain that produces the ^{22}Ne(α,n)^{25}Mg neutron source for both the weak and main components of the slow neutron-capture process. At temperatures of stellar helium burning, the astrophysically relevant resonances in the ^{18}O(α,γ)^{22}Ne reaction that dominate the reaction rate occur at α particle energies E_{lab} of 472 and 569 keV. However, previous experiments have shown the strengths of these two resonances to be very weak, and only upper limits or partial resonance strengths could be obtained. This Letter reports the first direct measurement of the total resonance strength for the 472- and 569-keV resonances, 0.26±0.05 and 0.63±0.30 μeV, respectively. New resonance strengths for the resonances at α particle energies of 662.1, 749.9, and 767.6 keV are also provided. These results were achieved in an experiment optimized for background suppression and detection efficiency. The experiment was performed at the Sanford Underground Research Facility, in the 4850-foot underground cavity dedicated to the Compact Accelerator System for Performing Astrophysical Research. The experimental end station used the γ-summing High EffiCiency TOtal absorption spectrometeR. Compared to previous works, the results decrease the stellar reaction rate by as much as ≈46_{-11}^{+6}% in the relevant temperature range of stellar helium burning.
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Affiliation(s)
- A C Dombos
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - D Robertson
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - A Simon
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - T Kadlecek
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M Hanhardt
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
- South Dakota Science and Technology Authority, Sanford Underground Research Facility, Lead, South Dakota 57754, USA
| | - J Görres
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - M Couder
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - R Kelmar
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - O Olivas-Gomez
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - E Stech
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
| | - F Strieder
- Department of Physics, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - M Wiescher
- Department of Physics and The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
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Tan WP, Boeltzig A, Dulal C, deBoer RJ, Frentz B, Henderson S, Howard KB, Kelmar R, Kolata JJ, Long J, Macon KT, Moylan S, Peaslee GF, Renaud M, Seymour C, Seymour G, Vande Kolk B, Wiescher M, Aguilera EF, Amador-Valenzuela P, Lizcano D, Martinez-Quiroz E. New Measurement of ^{12}C+^{12}C Fusion Reaction at Astrophysical Energies. Phys Rev Lett 2020; 124:192702. [PMID: 32469557 DOI: 10.1103/physrevlett.124.192702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/19/2019] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
Carbon and oxygen burning reactions, in particular, ^{12}C+^{12}C fusion, are important for the understanding and interpretation of the late phases of stellar evolution as well as the ignition and nucleosynthesis in cataclysmic binary systems such as type Ia supernovae and x-ray superbursts. A new measurement of this reaction has been performed at the University of Notre Dame using particle-γ coincidence techniques with SAND (a silicon detector array) at the high-intensity 5U Pelletron accelerator. New results for ^{12}C+^{12}C fusion at low energies relevant to nuclear astrophysics are reported. They show strong disagreement with a recent measurement using the indirect Trojan Horse method. The impact on the carbon burning process under astrophysical scenarios will be discussed.
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Affiliation(s)
- W P Tan
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Boeltzig
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - C Dulal
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - R J deBoer
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - B Frentz
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - S Henderson
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - K B Howard
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - R Kelmar
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J J Kolata
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J Long
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - K T Macon
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - S Moylan
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - G F Peaslee
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Renaud
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - C Seymour
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - G Seymour
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - B Vande Kolk
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - M Wiescher
- Department of Physics and Institute for Structure and Nuclear Astrophysics (ISNAP), University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - E F Aguilera
- Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Mexico, D.F., Mexico
| | - P Amador-Valenzuela
- Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Mexico, D.F., Mexico
| | - D Lizcano
- Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Mexico, D.F., Mexico
| | - E Martinez-Quiroz
- Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Mexico, D.F., Mexico
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Spampinato C, Pizzone R, Spartà R, Couder M, Tan W, Burian V, Chae K, D’Agata G, Guardo G, Indelicato I, Cognata ML, Lamia L, Lattuada D, Mrazek J, Oliva A, Palmerini S, Prajapati P, Rapisarda G, Romano S, Sergi M, Spitaleri C, Tumino A, Wiescher M, Anguilar S, Bardyan D, Blankstein D, Boccioli L, Callahan L, Clark A, Frentz B, Hall M, Gula A, Henderson S, Kelmar R, Liu Q, Long J, Majumdar A, McGuinness S, Nelson A, O’Malley P, Seyymour C, Skulski M, Wilkinson J. Study of 3He(n,p) 3H reaction at cosmological energies with trojan horse method. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202022702013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the network of reactions present in the Big Bang nucleosynthesis, the 3He(n, p)3H has an important role which impacts the final 7Li abundance. The Trojan Horse Method (THM) has been applied to the 3He(d, pt)H reaction in order to extract the astrophysical S(E)-factor of the 3He(n, p)3H in the Gamow energy range. The experiment will be described in the present work together with the first preliminary results.
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