New γ -ray transitions observed in Ne19 with implications for the O15(α,γ)Ne19 reaction rate

Hall, Matt R.; Bardayan, D. W.; Baugher, T.; Lepailleur, Alexandre A.; Pain, Steven D.; Ratkiewicz, A.; Ahn, S.; Allen, J. M.; Anderson, J. T.; Ayangeakaa, A. D.; Blackmon, J. C.; Burcher, S.; Carpenter, M. P.; Cha, S. M.; Chae, K. Y.; Chipps, Kelly A.; Cizewski, J. A.; Febbraro, Michael T.; Hall, Oscar; Hu, J.; Jiang, C. L.; Jones, K. L.; Lee, E. J.; O'Malley, P. D.; Ota, S.; Rasco, Bertis C.; Santiago-Gonzalez, D.; Seweryniak, D.; Sims, H.; Smith, K.; Tan, W. P.; Thompson, P.; Thornsberry, C.; Varner, Robert L.; Walter, D.; Wilson, G. L.; Zhu, S.

doi:10.1103/PhysRevC.99.035805

New $γ$ -ray transitions observed in ${}^{19}{Ne}$ with implications for the ${}^{15}O (α, γ) {}^{19}{Ne}$ reaction rate

Journal Article · Fri Mar 29 00:00:00 EDT 2019 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.99.035805· OSTI ID:1506778

Hall, Matt R. ^[1]; Bardayan, D. W. ^[1]; Baugher, T. ^[2]; Lepailleur, Alexandre A. ^[2]; ^[3]; Ratkiewicz, A. ^[2]; Ahn, S. ^[4]; Allen, J. M. ^[1]; Anderson, J. T. ^[5]; Ayangeakaa, A. D. ^[5]; Blackmon, J. C. ^[6]; Burcher, S. ^[7]; Carpenter, M. P. ^[5]; Cha, S. M. ^[8]; Chae, K. Y. ^[8]; ^[3]; Cizewski, J. A. ^[2]; ^[3]; Hall, Oscar ^[9]; Hu, J. ^[1] more »

Univ. of Notre Dame, IN (United States). Dept. of Physics
Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Sungkyunkwan Univ., Suwon (South Korea). Dept. of Physics
Univ. of Notre Dame, IN (United States). Dept. of Physics; Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physics Division
Sungkyunkwan Univ., Suwon (South Korea). Dept. of Physics; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy; Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics and Applied Physics

The ¹⁵O(α,γ) ¹⁹Ne reaction is responsible for breakout from the hot CNO cycle in type I x-ray bursts. Understanding the properties of resonances between E_x=4 and 5 MeV in ¹⁹Ne is crucial in the calculation of this reaction rate. The spins and parities of these states are well known, with the exception of the 4.14- and 4.20-MeV states, which have adopted spin-parities of 9/2^- and 7/2^-, respectively. γ-ray transitions from these states were studied using triton-γ – γ coincidences from the ¹⁹F(³He,tγ) ¹⁹Ne reaction measured with the GODDESS (Gammasphere ORRUBA Dual Detectors for Experimental Structure Studies) at Argonne National Laboratory. The observed transitions from the 4.14- and 4.20-MeV states provide strong evidence that the J^π values are actually 7/2^- and 9/2^-, respectively. These assignments are consistent with the values in the ¹⁹F mirror nucleus and in contrast to previously accepted assignments.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-06CH11357; AC05-00OR22725; FG02-96ER40963; FG02-96ER40978

OSTI ID:: 1506778

Alternate ID(s):: OSTI ID: 1504532
OSTI ID: 1514273

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 99; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

γ -ray spectroscopy of astrophysically important states in Ca 39 Hall, M. R.; Bardayan, D. W.; Baugher, T. Physical Review C, Vol. 101, Issue 1 https://doi.org/10.1103/physrevc.101.015804	journal	January 2020

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