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First Direct Measurement of the 17F(p,gamma)18Ne Cross Section

Conference ·
OSTI ID:1022671
 [1];  [1];  [1];  [2];  [3];  [4];  [5];  [6];  [2];  [1];  [1];  [4];  [2];  [5];  [1]
  1. ORNL
  2. University of Tennessee, Knoxville (UTK)
  3. Colorado School of Mines, Golden
  4. Rutgers University
  5. Tennessee Technological University (TTU)
  6. Oak Ridge Associated Universities (ORAU)
+ Show Author Affiliations
The rate of the {sup 17}F(p,{gamma}){sup 18}Ne reaction is of significant importance in astrophysical events like novae and x-ray bursts. The decay of {sup 17}F is thought to help drive the expansion of the nova envelope, and the {sup 17}F(p,{gamma}){sup 18}Ne reaction affects the production of {sup 18}F, a target of gamma-ray astronomy, as well as being an important link in the ({alpha},p) reaction chain during the ignition phase of x-ray bursts. A 3{sup +} state in {sup 18}Ne predicted to dominate the rate was found at 599.8 keV using the {sup 17}F(p,p){sup 17}F reaction [1], but the resonance strength was unknown. For the first time, the {sup 17}F(p,{gamma}){sup 18}Ne reaction has been measured directly with the Daresbury Recoil Separator, using a mixed beam of radioactive {sup 17}F and stable {sup 17}O from the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. A {gamma} width was found for the 599.8 keV resonance in {sup 18}Ne, and an upper limit on the direct capture S factor was determined at an intermediate energy of 800 keV.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
1022671
Country of Publication:
United States
Language:
English

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
ASTRONOMY
CHAINS
CROSS SECTIONS
DECAY
IGNITION
NOVAE
ORNL
PRODUCTION
RADIOACTIVE ION BEAMS
RESONANCE
SPECTROSCOPY
TARGETS