New portal to the O15(α,γ)Ne19 resonance triggering CNO-cycle breakout

Wrede, C.; Glassman, B. E.; Pérez-Loureiro, D.; Allen, J. M.; Bardayan, D. W.; Bennett, M. B.; Brown, B. A.; Chipps, Kelly A.; Febbraro, Michael T.; Fry, C.; Hall, M. R.; Hall, O.; Liddick, S. N.; O'Malley, P.; Ong, W. -J.; Pain, Steven D.; Schwartz, S. B.; Shidling, P.; Sims, H.; Thompson, Paul James; Zhang, H.

doi:10.1103/PhysRevC.96.032801

New portal to the ${}^{15}O (α, γ) {}^{19}{Ne}$ resonance triggering CNO-cycle breakout

Journal Article · Fri Sep 29 04:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.032801· OSTI ID:1513412

Wrede, C. ^[1]; Glassman, B. E. ^[1]; Pérez-Loureiro, D. ^[1]; Allen, J. M. ^[2]; Bardayan, D. W. ^[2]; Bennett, M. B. ^[1]; Brown, B. A. ^[1]; ^[3]; ^[3]; Fry, C. ^[1]; Hall, M. R. ^[2]; Hall, O. ^[2]; Liddick, S. N. ^[1]; O'Malley, P. ^[2]; Ong, W. -J. ^[1]; ^[4]; Schwartz, S. B. ^[1]; Shidling, P. ^[5]; Sims, H. ^[6]; Thompson, Paul James ^[3] more »

Michigan State Univ., East Lansing, MI (United States)
Univ. of Notre Dame, Notre Dame, IN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Texas A & M Univ., College Station, TX (United States)
Univ. of Surrey, Guildford (United Kingdom)

The ¹⁵O(α,γ)¹⁹Ne reaction is expected to trigger the initial path for breakout from the CNO hydrogen-burning cycles to the rapid proton capture (rp) process in type I x-ray bursts on accreting neutron stars. The thermonuclear reaction rate has a major impact on models of type I x-ray burst observables and it depends on the small α-particle branching ratio, Γ_α/Γ, of the 4.03 MeV state in ¹⁹Ne. Attempts to measure Γ_α/Γ by populating the 4.03 MeV state using nuclear reactions have only led to strong upper limits. In the present work, we report the first experimental evidence that the 4.03 MeV ¹⁹Ne state is populated in ²⁰Mg β-delayed proton emission. Furthermore this new channel has the potential to provide the necessary sensitivity to detect a finite value of Γ_α/Γ.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1513412

Alternate ID(s):: OSTI ID: 1395605

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 96; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (34)

X-ray bursts Lewin, Walter H. G.; Van Paradijs, Jan; Taam, Ronald E. Space Science Reviews, Vol. 62, Issue 3-4 https://doi.org/10.1007/BF00196124	journal	September 1993
Energy levels of light nuclei A = 16–17 Tilley, D. R.; Weller, H. R.; Cheves, C. M. Nuclear Physics A, Vol. 564, Issue 1 https://doi.org/10.1016/0375-9474(93)90073-7	journal	November 1993
Beta-decay of 20Mg Piechaczek, A.; Mohar, M. F.; Anne, R. Nuclear Physics A, Vol. 584, Issue 3 https://doi.org/10.1016/0375-9474(94)00791-K	journal	February 1995
Energy levels of light nuclei A = 18–19 Tilley, D. R.; Weller, H. R.; Cheves, C. M. Nuclear Physics A, Vol. 595, Issue 1 https://doi.org/10.1016/0375-9474(95)00338-1	journal	December 1995
Commissioning the A1900 projectile fragment separator Morrissey, D. J.; Sherrill, B. M.; Steiner, M. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204 https://doi.org/10.1016/S0168-583X(02)01895-5	journal	May 2003
Doppler broadened γ-lines from exotic nuclei Fynbo, H. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 207, Issue 3 https://doi.org/10.1016/S0168-583X(03)00570-6	journal	July 2003
Thirty-two-fold segmented germanium detectors to identify γ-rays from intermediate-energy exotic beams Mueller, W. F.; Church, J. A.; Glasmacher, T. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 466, Issue 3 https://doi.org/10.1016/S0168-9002(01)00257-1	journal	July 2001
Energy levels of light nuclei, A = 20 Tilley, D. R.; Cheves, C. M.; Kelley, J. H. Nuclear Physics A, Vol. 636, Issue 3 https://doi.org/10.1016/S0375-9474(98)00129-8	journal	June 1998
Nuclear Data Sheets for A=40 Cameron, John A.; Singh, Balraj Nuclear Data Sheets, Vol. 102, Issue 2 https://doi.org/10.1016/j.nds.2004.06.001	journal	June 2004
Nuclear Data Sheets for A = 208 Martin, M. J. Nuclear Data Sheets, Vol. 108, Issue 8 https://doi.org/10.1016/j.nds.2007.07.001	journal	August 2007
Optimization of the National Superconducting Cyclotron Laboratory Digital Data Acquisition System for use with fast scintillator detectors Prokop, C. J.; Liddick, S. N.; Larson, N. R. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 792 https://doi.org/10.1016/j.nima.2015.04.052	journal	August 2015
Explosive hydrogen burning Wallace, R. K.; Woosley, S. E. The Astrophysical Journal Supplement Series, Vol. 45 https://doi.org/10.1086/190717	journal	January 1981
The Importance of ¹⁵ O(α,γ) ¹⁹ Ne to X‐Ray Bursts and Superbursts Fisker, Jacob Lund; Gorres, Joachim; Wiescher, Michael The Astrophysical Journal, Vol. 650, Issue 1 https://doi.org/10.1086/507083	journal	October 2006
The ¹⁵ O(α,γ) ¹⁹ Ne Reaction Rate and the Stability of Thermonuclear Burning on Accreting Neutron Stars Fisker, Jacob Lund; Tan, Wanpeng; Gorres, Joachim The Astrophysical Journal, Vol. 665, Issue 1 https://doi.org/10.1086/519517	journal	August 2007
THE INFLUENCE OF UNCERTAINTIES IN THE ¹⁵ O(α, γ) ¹⁹ Ne REACTION RATE ON MODELS OF TYPE I X-RAY BURSTS Davids, Barry; Cyburt, Richard H.; José, Jordi The Astrophysical Journal, Vol. 735, Issue 1 https://doi.org/10.1088/0004-637X/735/1/40	journal	June 2011
Break-out reactions from the CNO cycles Wiescher, M.; Görres, J.; Schatz, H. Journal of Physics G: Nuclear and Particle Physics, Vol. 25, Issue 6 https://doi.org/10.1088/0954-3899/25/6/201	journal	January 1999
The Ame2012 atomic mass evaluation Wang, M.; Audi, G.; Wapstra, A. H. Chinese Physics C, Vol. 36, Issue 12 https://doi.org/10.1088/1674-1137/36/12/003	journal	December 2012
Astrophysical rate of 15 O ( α , γ ) 19 Ne via the ( p , t ) reaction in inverse kinematics Davids, B.; van den Berg, A. M.; Dendooven, P. Physical Review C, Vol. 67, Issue 6 https://doi.org/10.1103/PhysRevC.67.065808	journal	June 2003
Branching ratio Γ α / Γ γ of the 4.033 MeV 3 / 2 + state in 19 Ne Rehm, K. E.; Wuosmaa, A. H.; Jiang, C. L. Physical Review C, Vol. 67, Issue 6 https://doi.org/10.1103/PhysRevC.67.065809	journal	June 2003
Lifetime of the astrophysically important 4.03-MeV state in Ne 19 Tan, W. P.; Görres, J.; Daly, J. Physical Review C, Vol. 72, Issue 4 https://doi.org/10.1103/PhysRevC.72.041302	journal	October 2005
Lifetime of 19 Ne * (4.03 MeV) Kanungo, R.; Alexander, T. K.; Andreyev, A. N. Physical Review C, Vol. 74, Issue 4 https://doi.org/10.1103/PhysRevC.74.045803	journal	October 2006
Lifetimes of states in Ne 19 above the O 15 + α breakup threshold Mythili, S.; Davids, B.; Alexander, T. K. Physical Review C, Vol. 77, Issue 3 https://doi.org/10.1103/PhysRevC.77.035803	journal	March 2008
Toward precise Q EC values for the superallowed 0 + → 0 + β decays of T = 2 nuclides: The masses of Na 20 , Al 24 , P 28 , and Cl 32 Wrede, C.; Clark, J. A.; Deibel, C. M. Physical Review C, Vol. 81, Issue 5 https://doi.org/10.1103/PhysRevC.81.055503	journal	May 2010
Observation of Doppler broadening in β -delayed proton- γ decay Schwartz, S. B.; Wrede, C.; Bennett, M. B. Physical Review C, Vol. 92, Issue 3 https://doi.org/10.1103/PhysRevC.92.031302	journal	September 2015
Revalidation of the isobaric multiplet mass equation for the A = 20 quintet Glassman, B. E.; Pérez-Loureiro, D.; Wrede, C. Physical Review C, Vol. 92, Issue 4 https://doi.org/10.1103/PhysRevC.92.042501	journal	October 2015
Isobaric multiplet mass equation in the A = 31 , T = 3 / 2 quartets Bennett, M. B.; Wrede, C.; Brown, B. A. Physical Review C, Vol. 93, Issue 6 https://doi.org/10.1103/PhysRevC.93.064310	journal	June 2016
β -delayed γ decay of P 26 : Possible evidence of a proton halo Pérez-Loureiro, D.; Wrede, C.; Bennett, M. B. Physical Review C, Vol. 93, Issue 6 https://doi.org/10.1103/PhysRevC.93.064320	journal	June 2016
Classical-Nova Contribution to the Milky Way’s Al 26 Abundance: Exit Channel of the Key Al 25 ( p , γ ) Si 26 Resonance Bennett, M. B.; Wrede, C.; Chipps, K. A. Physical Review Letters, Vol. 111, Issue 23 https://doi.org/10.1103/PhysRevLett.111.232503	journal	December 2013
Breakdown of the Isobaric Multiplet Mass Equation for the A = 20 and 21 Multiplets Gallant, A. T.; Brodeur, M.; Andreoiu, C. Physical Review Letters, Vol. 113, Issue 8 https://doi.org/10.1103/PhysRevLett.113.082501	journal	August 2014
Isospin Mixing Reveals P 30 ( p , γ ) S 31 Resonance Influencing Nova Nucleosynthesis Bennett, M. B.; Wrede, C.; Brown, B. A. Physical Review Letters, Vol. 116, Issue 10 https://doi.org/10.1103/PhysRevLett.116.102502	journal	March 2016
Resonant Rate for 15 O ( α , γ ) 19 Ne Mao, Z. Q.; Fortune, H. T.; Lacaze, A. G. Physical Review Letters, Vol. 74, Issue 19 https://doi.org/10.1103/PhysRevLett.74.3760	journal	May 1995
O 15 ( α , γ ) Ne 19 Breakout Reaction and Impact on X-Ray Bursts Tan, W. P.; Fisker, J. L.; Görres, J. Physical Review Letters, Vol. 98, Issue 24 https://doi.org/10.1103/PhysRevLett.98.242503	journal	June 2007
Beta-delayed proton emission from 20Mg Lund, M. V.; Andreyev, A.; Borge, M. J. G. The European Physical Journal A, Vol. 52, Issue 10 https://doi.org/10.1140/epja/i2016-16304-x	journal	October 2016
Dependence of X-Ray Burst Models on Nuclear Reaction Rates Cyburt, R. H.; Amthor, A. M.; Heger, A. The Astrophysical Journal, Vol. 830, Issue 2 https://doi.org/10.3847/0004-637X/830/2/55	journal	October 2016

Cited By (2)

Nuclear physics of the outer layers of accreting neutron stars Meisel, Zach; Deibel, Alex; Keek, Laurens Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 9 https://doi.org/10.1088/1361-6471/aad171	journal	July 2018
Nuclear Physics of the Outer Layers of Accreting Neutron Stars Meisel, Zach; Deibel, Alex; Keek, Laurens arXiv https://doi.org/10.48550/arxiv.1807.01150	text	January 2018