First Experimental Constraints on the Interference of 3/2+ Resonances in the ¹⁸F(p, ?)¹⁵O Reaction

Journal Article · Thu Jun 01 00:00:00 EDT 2006 · Physical Review C

OSTI ID:930831

Chae, Kyung Yuk ^[1]; Bardayan, Daniel W ^[1]; Blackmon, Jeff C ^[1]; Gregory, Darren R ^[1]; Guidry, Mike W ^[1]; Johnson, Micah ^[1]; KOZUB, RAYMOND L ^[1]; Livesay, Jake ^[1]; Ma, Zhanwen ^[1]; Nesaraja, Caroline D ^[1]; Pain, Steven D ^[1]; Paulauskas, Stanley V ^[1]; Porter-Peden, Matthew D ^[1]; Smith, Nathan A ^[1]; Smith, Michael Scott ^[1]; Thomas, Jeffrey S ^[1]

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1. ORNL

The interference effects among J{sup {pi}}=3/2+ resonances in the {sup 18}F+p system have not been previously measured. R-matrix calculations show that the cross sections above the E{sub c.m.}=665 keV resonance are sensitive to the interference between the E{sub c.m.}=8, 38, and 665 keV resonances. An excitation function for the {sup 1}H({sup 18}F,{alpha}){sup 15}O reaction has been measured in the energy range of E{sub c.m.}=663-877 keV using radioactive 18F beams at the Holifield Radioactive Ion Beam Facility (HRIBF). By comparing the observed cross sections with the R-matrix calculations, we provide the first experimental constraints on the interference. Upper limits on proton widths ({Gamma}{sub p}) of the E{sub c.m.}=827 and 842 keV resonances have been set as well.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 930831
• Journal Information: Physical Review C, Vol. 74; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
ENERGY RANGE
EXCITATION FUNCTIONS
PROTONS
R MATRIX
RADIOACTIVE ION BEAMS
RESONANCE