Measurement of the keV resonance in the reaction
Abstract
The reaction regulates the power generated by the CN cycle and thus impacts the structure and evolution of every star at some point in its life. The lowest positive-energy resonance in this reaction is located at keV, too high in energy to strongly influence quiescent stellar burning. Yet, the strength of this resonance is used as a cross-section normalization for lower-energy measurements of this reaction. We report on new measurements of the energy, strength, and -ray branching ratios for the 259-keV resonance, using different detection and data-analysis schemes. We have also reevaluated previous results, where possible. Our proposed recommended strength of meV is in agreement with the previous value of 13.1(6) meV, but is more precise and thus provides a more reliable normalization for low-energy measurements.
- Authors:
-
- NASA Marshall Space Flight Center (MSFC), Huntsville, AL (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
- Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
- Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of North Carolina, Chapel Hill, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States); Nordion, Kanata, ON (Canada)
- Publication Date:
- Research Org.:
- University of North Carolina, Chapel Hill, NC (United States); Krell Institute, Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1600488
- Alternate Identifier(s):
- OSTI ID: 1328611
- Grant/Contract Number:
- FG02-97ER41041; FC52-08NA28752
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 2; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTRONOMY AND ASTROPHYSICS; experimental nuclear astrophysics
Citation Formats
Daigle, S., Kelly, K. J., Champagne, A. E., Buckner, M. Q., Iliadis, C., and Howard, C. Measurement of the Erc.m.=259 keV resonance in the N14(p,γ)O15 reaction. United States: N. p., 2016.
Web. doi:10.1103/PhysRevC.94.025803.
Daigle, S., Kelly, K. J., Champagne, A. E., Buckner, M. Q., Iliadis, C., & Howard, C. Measurement of the Erc.m.=259 keV resonance in the N14(p,γ)O15 reaction. United States. https://doi.org/10.1103/PhysRevC.94.025803
Daigle, S., Kelly, K. J., Champagne, A. E., Buckner, M. Q., Iliadis, C., and Howard, C. Mon .
"Measurement of the Erc.m.=259 keV resonance in the N14(p,γ)O15 reaction". United States. https://doi.org/10.1103/PhysRevC.94.025803. https://www.osti.gov/servlets/purl/1600488.
@article{osti_1600488,
title = {Measurement of the Erc.m.=259 keV resonance in the N14(p,γ)O15 reaction},
author = {Daigle, S. and Kelly, K. J. and Champagne, A. E. and Buckner, M. Q. and Iliadis, C. and Howard, C.},
abstractNote = {The N14(p,γ)O15 reaction regulates the power generated by the CN cycle and thus impacts the structure and evolution of every star at some point in its life. The lowest positive-energy resonance in this reaction is located at Erc.m.=259 keV, too high in energy to strongly influence quiescent stellar burning. Yet, the strength of this resonance is used as a cross-section normalization for lower-energy measurements of this reaction. We report on new measurements of the energy, strength, and γ-ray branching ratios for the 259-keV resonance, using different detection and data-analysis schemes. We have also reevaluated previous results, where possible. Our proposed recommended strength of ωγ=12.6(3) meV is in agreement with the previous value of 13.1(6) meV, but is more precise and thus provides a more reliable normalization for low-energy (p,γ) measurements.},
doi = {10.1103/PhysRevC.94.025803},
journal = {Physical Review C},
number = 2,
volume = 94,
place = {United States},
year = {Mon Aug 22 00:00:00 EDT 2016},
month = {Mon Aug 22 00:00:00 EDT 2016}
}
Web of Science
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