Published April 24, 2009
| Version v1
Journal article
Discovery of a New Broad Resonance in 19Ne: Implications for the Destruction of the Cosmic γ-Ray Emitter 18F
Creators
- 1. Grand Accelerateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, B.P. 55027, F-14076 Caen Cedex 5 (France)
- 2. Laboratoire de Physique Corpusculaire ENSICAEN, CNRS-IN2P3 UMR 6534 et Universite de Caen, F-14050 Caen (France)
- 3. School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ (United Kingdom)
- 4. Centre de Recherche du Cyclotron, Universite catholique de Louvain, B-1348 Louvain-la-Neuve (Belgium)
- 5. CSNSM UMR 8609, CNRS-IN2P3/Universite Paris-Sud, Batiment 104, 91405 Orsay Campus (France)
- 6. Horia Hulubei National Institute of Physics and Nuclear Engineering, P.O. Box MG6, Bucharest-Margurele (Romania)
Description
Six proton-emitting states in 19Ne were studied through the inelastic scattering reaction H(19Ne,p)19Ne*(p)18F. Their energies and widths were derived from the protons detected at zero degree, while proton-proton angular correlations between the detector at zero degree and a segmented annular detector were used to determine their spin value. In addition to the known states, a new broad J=(1/2) resonance has been evidenced at Ex≅7.9 MeV, ≅1.45 MeV above the proton emission threshold. By introducing this resonance, the 18F(p,α)15O destruction rate in novae is significantly enhanced. This reduces the chance to observe the cosmic γ-ray emission of 18F from novae in space telescopes.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 102
- Journal Issue
- 16
- Journal Page Range
- p. 162503-162503.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41060172
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANGULAR CORRELATION; EMISSION; FLUORINE 18; FLUORINE 18 TARGET; GAMMA RADIATION; INELASTIC SCATTERING; NEON 19; NOVAE; OXYGEN 15; PROTON REACTIONS; PROTONS; RESONANCE; SPIN; TELESCOPES
- Descriptors DEC
- ANGULAR MOMENTUM; BARYON REACTIONS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BINARY STARS; CHARGED-PARTICLE REACTIONS; CORRELATIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ERUPTIVE VARIABLE STARS; EVEN-ODD NUCLEI; FERMIONS; FLUORINE ISOTOPES; HADRON REACTIONS; HADRONS; HOURS LIVING RADIOISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MINUTES LIVING RADIOISOTOPES; NANOSECONDS LIVING RADIOISOTOPES; NEON ISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEONS; ODD-ODD NUCLEI; OXYGEN ISOTOPES; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; SCATTERING; SECONDS LIVING RADIOISOTOPES; STARS; TARGETS; VARIABLE STARS
Optional Information
- Notes
- (c) 2009 The American Physical Society