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Title: Key Ne 19 States Identified Affecting γ -Ray Emission from F 18 in Novae

Journal Article · · Physical Review Letters
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  1. Univ. of Notre Dame, Notre Dame, IN (United States)
  2. Rutgers Univ., New Brunswick, NJ (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Michigan State Univ., East Lansing, MI (United States)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Louisiana State Univ., Baton Rouge, LA (United States)
  7. Univ. of Tennessee, Knoxville, TN (United States)
  8. Sungkyunkwan Univ., Suwon (South Korea)
  9. Univ. of Notre Dame, Notre Dame, IN (United States); Univ. of Surrey, Surrey (United Kingdom)
  10. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  11. Rutgers Univ., New Brunswick, NJ (United States); Univ. of Surrey, Surrey (United Kingdom)
  12. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  13. Louisiana State Univ., Baton Rouge, LA (United States); Univ. of Massachusetts, Lowell, MA (United States)

Detection of nuclear-decay γ rays provides a sensitive thermometer of nova nucleosynthesis. The most intense γ-ray flux is thought to be annihilation radiation from the β+ decay of 18F, which is destroyed prior to decay by the 18F(p,α)15O reaction. Estimates of 18F production had been uncertain, however, because key near-threshold levels in the compound nucleus, 19Ne, had yet to be identified. We report the first measurement of the 19F(3He,)19Ne reaction, in which the placement of two long-sought 3/2+ levels is suggested via triton-γ–γ coincidences. Furthermore, the precise determination of their resonance energies reduces the upper limit of the rate by a factor of 1.5–17 at nova temperatures and reduces the average uncertainty on the nova detection probability by a factor of 2.1.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Rutgers Univ., New Brunswick, NJ (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
AC02-06CH11357; NA002132; AC05-00OR22725; FG02-96ER40963; FG02-96ER40978; NA0002132
OSTI ID:
1495378
Alternate ID(s):
OSTI ID: 1493858; OSTI ID: 1510254; OSTI ID: 1566952
Journal Information:
Physical Review Letters, Vol. 122, Issue 5; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

References (30)

Gamma-ray observations of Nova Sgr 2015 No. 2 with INTEGRAL journal July 2018
The 18F(p, α) 15O low-energy S-factor: A microscopic approach journal April 2007
Low-energy F 18 ( p , α ) O 15 cross section measurements relevant to nova γ -ray emission journal January 2009
Radioactivities from novae journal October 2006
Strength of the F 18 ( p , α ) O 15 Resonance at E c . m . = 330     k e V journal December 2002
First proton-transfer study of 18 F + p resonances relevant for novae journal May 2011
Energy levels of light nuclei A = 18–19 journal December 1995
Science with e-ASTROGAM journal August 2018
Coupling Gammasphere and ORRUBA
  • Ratkiewicz, A.; Pain, S. D.; Cizewski, J. A.
  • APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY: Twenty-Second International Conference, AIP Conference Proceedings https://doi.org/10.1063/1.4802376
conference January 2013
Destruction of 18 F via 18 F ( p , α ) 15 O burning through the E c . m . = 665 keV resonance journal May 2001
The first science result with the JENSA gas-jet target: Confirmation and study of a strong subthreshold F 18 ( p , α ) O 15 resonance journal December 2015
Direct Reaction Measurements Using GODDESS journal January 2017
The 18F(p,α)15O reaction rate for application to nova γ-ray emission journal July 2005
Advances in instrumentation for nuclear astrophysics journal April 2014
Spectroscopy of Ne 19 for the thermonuclear O 15 ( α , γ ) Ne 19 and F 18 ( p , α ) O 15 reaction rates journal November 2015
The jina Reaclib Database: its Recent Updates and Impact on Type-I X-Ray Bursts journal June 2010
Breakout from the hot CNO cycle: The 18 F ( p , γ ) vs 18 F ( p , α ) branching ratio journal May 1998
Direct measurement of the F 18 ( p , α ) O 15 reaction at nova temperatures journal April 2011
Lifetime of the astrophysically important 4.03-MeV state in Ne 19 journal October 2005
The Galactic nova rate Revisited journal January 2017
Indirect study of 19Ne states near the threshold journal July 2007
New constraints on the F 18 ( p , α ) O 15 rate in novae from the ( d , p ) reaction journal March 2005
Development of a high solid-angle silicon detector array for measurement of transfer reactions in inverse kinematics
  • Pain, S. D.; Cizewski, J. A.; Hatarik, R.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 261, Issue 1-2 https://doi.org/10.1016/j.nimb.2007.04.289
journal August 2007
Nuclear structure properties of astrophysical importance for Ne 19 above the proton threshold energy journal May 2007
Computational Infrastructure for Nuclear Astrophysics
  • Smith, Michael S.
  • ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology, AIP Conference Proceedings https://doi.org/10.1063/1.2234462
conference January 2006
Evolutionary sequences for Nova V1974 Cygni using new nuclear reaction rates and opacities journal May 1998
Single-nucleon transfer reactions on 18 F journal November 2011
The GAMMASPHERE journal December 1990
AZURE: An R -matrix code for nuclear astrophysics journal April 2010
Is γ -Ray Emission from Novae Affected by Interference Effects in the F 18 ( p , α ) O 15 Reaction? journal January 2013