The ^17O(p,α)^14N reaction measured using a novel technique

Details The ^17O(p,α)^14N reaction measured using a novel technique The ^17O(p,α)^14N reaction measured using a novel technique

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..dnp.bc004m&link_type=abstract

American Physical Society, 2007 Annual Meeting of the Division of Nuclear Physics, October 10-13,2007, abstract #BC.004

Physics

Nuclear Physics

Scientific paper

We developed a new approach for measuring (p,α) reactions and applied it to measure the energy and strength of the 183 keV resonance in ^17O(p,α)^ 14N that was recently reported to significantly increase the reaction rate in novae. A beam of ^17O from the Holifield Radioactive Ion Beam Facility [ORNL] tandem accelerator bombarded hydrogen gas, which filled a differentially pumped scattering chamber at pressures up to 4 Torr. Reaction products were detected in coincidence and the vertex of the reaction was determined from the relative kinematics of the two products. Nova simulations show the new ^17O(p,α)^14N reaction rate significantly decreases ^18F production in low mass ONeMg nova but affects more energetic novae less. Results and astrophysical implications will be presented as well as comments regarding my past CEU participation. ORNL is managed by UT-Battelle for the US DOE.

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