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Hydrogen Burning ofO17in Classical Novae
- Source :
- Physical Review Letters, Physical Review Letters, American Physical Society, 2005, 95, 031101 (4 p.). ⟨10.1103/PhysRevLett.95.031101⟩, Physical Review Letters, Vol. 95, p. 031101 (2005\ ERRAT,96,019902.2006)
- Publication Year :
- 2005
- Publisher :
- American Physical Society (APS), 2005.
-
Abstract
- We report on the observation of a previously unknown resonance at E=194.1+/-0.6 keV (lab) in the 17-O(p,alpha)14-N reaction, with a measured resonance strength omega_gamma(p,alpha)=1.6+/-0.2 meV. We studied in the same experiment the 17-O(p,gamma)18-F reaction by an activation method and the resonance-strength ratio was found to be omega_gamma(p,alpha)/omega_gamma(p,gamma)=470+/-50. The corresponding excitation energy in the 18-F compound nucleus was determined to be 5789.8+/-0.3 keV by gamma-ray measurements using the 14-N(alpha,gamma)18-F reaction. These new resonance properties have important consequences for 17-O nucleosynthesis and gamma-ray astronomy of classical novae.<br />4 pages, 4 figures. Accepted for publication in Physical Review Letters
- Subjects :
- Hydrogen
nuclear energy level transitions
FOS: Physical sciences
General Physics and Astronomy
Alpha (ethology)
chemistry.chemical_element
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Astrophysics
proton radiative capture
7. Clean energy
01 natural sciences
Omega
alpha particle-nucleus reactions
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Nuclear physics
Nucleosynthesis
proton-nucleus reactions
0103 physical sciences
Nuclear Experiment (nucl-ex)
Nuclear Experiment
010303 astronomy & astrophysics
novae
Physics
Oxygen-17
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
010308 nuclear & particles physics
Astrophysics (astro-ph)
nucleosynthesis
Resonance
Alpha particle
26.30.+k, 25.40.Lw, 25.40.Ny, 27.20.+n
chemistry
Excitation
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....d4132eb43b8617f85a2347d623aa8a35
- Full Text :
- https://doi.org/10.1103/physrevlett.95.031101