A New Measurement of the E1 Component of the ^12C(,)^16O Reaction

Details A New Measurement of the E1 Component of the ^12C(,)^16O Reaction A New Measurement of the E1 Component of the ^12C(,)^16O Reaction

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..dnp.ce004t&link_type=abstract

American Physical Society, Division of Nuclear Physics Annual Meeting, October 25-28, 2006, abstract #CE.004

Physics

Nuclear Physics

Scientific paper

Durin the past few years we have been involved in a measurement of the E1 component of the ^12C(,)^16O reaction. Using a new approach with a set of high acceptance ionization chambers, we have measured the beta-delayed alpha decay in ^16N. The subthreshold 1^- state, which dominates the S-factor S(E1) at astrophysical energies, produces a small interference peak in the alpha spectrum, whose strength is sensitive to S(E1). The data have been analyzed using extrapolations obtained from R-matrix theory. The results from two independent runs will be presented and compared to previous experiments. The contributions from systematic uncertainties as well as the sensitivity of S(E1) to various R-matrix parameters will be discussed. This work was supported by the US Department of Energy, Nuclear Physics Division, under contract No. W-31-109-ENG-38 and by the NSF Grant No. PHY-02-16783 (Joint Institute for Nuclear Astrophysics).

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