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

Conference · Thu Jan 01 04:00:00 EST 2009

OSTI ID:953192

Chipps, K. ^[1]; Bardayan, Daniel W ^[2]; Nesaraja, Caroline D ^[2]; Pain, S. D. ^[3]; Smith, Michael Scott ^[2]; Blackmon, Jeff C ^[2]; Chae, K. Y. ^[4]; Moazen, Brian ^[4]; Pittman, S. T. ^[4]; Greife, U. ^[1]; Hatarik, Robert ^[3]; Peters, W. A. ^[3]; Kozub, R. L. ^[5]; Matei, Catalin ^[6]

---

1. Colorado School of Mines, Golden
2. ORNL
3. Rutgers University
4. University of Tennessee, Knoxville (UTK)
5. Tennessee Technological University
6. Oak Ridge Associated Universities (ORAU)

The rate of the {sup 17}F(p,{gamma}){sup 18}Ne reaction is important in various astrophysical events. A previous {sup 17}F(p,p){sup 17}F measurement identified a 3{sup +} state providing the strongest resonance contribution, but the resonance strength was unknown. We have directly measured the {sup 17}F(p,{gamma}){sup 18}Ne reaction using a mixed beam of {sup 17}F and {sup 17}O at ORNL. The resonance strength for the 3{sup +} resonance in {sup 18}Ne was found to be {omega}{gamma} = 33 {+-} 14(stat) {+-} 17(syst) meV, corresponding to a {gamma} width of {Lambda}{sub {gamma}} = 56 {+-} 24(stat) {+-} 30(syst) meV. An upper limit on the direct capture of S(E) {le} 65 keV b was determined at an energy of 800 keV.

• Research Organization: Oak Ridge National Laboratory (ORNL); Holifield Radioactive Ion Beam Facility
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 953192
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
CROSS SECTIONS
FLUORINE 17
NEON 18
OXYGEN 17
RESONANCE