Measurement of the {sup 17}O({ital p},{alpha}){sup 14}N Cross Section at Stellar Energies
Journal Article
·
· Physical Review Letters
- The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255 (United States)
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
The cross section for the astrophysically important {sup 17}O({ital p},{alpha}){sup 14}N reaction was measured at proton energies of 75 and 65 keV. Thick, high-purity Ta{sub 2}O{sub 5} targets (77% enriched {sup 17}O) and large-area detectors were used with beam currents of 0.45 mA. Backgrounds were measured using Ta{sub 2}O{sub 5} targets of natural isotopic composition. The expected resonance at {ital E}{sub {ital p}}=70 keV was observed in the data taken at 75 keV, and its proton width was found to be 22{plus_minus}3{sub stat}{plus_minus}2{sub target}{sub {minus}1}{sup +2}{sub beam} neV.
- OSTI ID:
- 44846
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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