Kinematically complete measurement of the {sup 1}H({sup 18}F,p){sup 18}F excitation function for the astrophysically important 7.08-MeV state in {sup 19}Ne

Journal Article · Sun Oct 01 00:00:00 EDT 2000 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.62.042802· OSTI ID:40206057

Bardayan, D W; Blackmon, J C; Bradfield-Smith, W; Brune, C R; Champagne, A E; Davinson, T; Johnson, B A; Kozub, R L; Lee, C S; Lewis, R ^[1]

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1. and others

Knowledge of the astrophysical {sup 18}F(p,{alpha}){sup 15}O rate is important for understanding gamma-ray emission from novae and heavy-element production in x-ray bursts. A state with E{sub x}{approx_equal}7.08 MeV in {sup 19}Ne provides an s-wave resonance and, depending on its properties, could dominate the {sup 18}F(p,{alpha}){sup 15}O rate. By measuring a kinematically complete {sup 1}H({sup 18}F,p){sup 18}F excitation function with a radioactive {sup 18}F beam at the ORNL Holifield Radioactive Ion Beam Facility, we find that the {sup 19}Ne state lies at a center-of-mass energy of 665.3{+-}1.7 keV (E{sub x}=7077{+-}2 keV), has a total width of 38.5{+-}3.4 keV, and a proton partial-width of 15.8{+-}1.6 keV.

• Sponsoring Organization: (US)
• OSTI ID: 40206057
• Journal Information: Physical Review C, Vol. 62, Issue 4; Other Information: DOI: 10.1103/PhysRevC.62.042802; Othernumber: PRVCAN000062000004042802000001; R05010PRC; PBD: Oct 2000; ISSN 0556-2813
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EXCITATION FUNCTIONS
NOVAE
ORNL
PRODUCTION
PROTONS
RADIOACTIVE ION BEAMS
RESONANCE