Physics – Nuclear Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..dnp.ck024g&link_type=abstract
American Physical Society, Division of Nuclear Physics Meeting, 27-30 October, 2004, Chicago, IL. MEETING ID: DNP04., abstract #
Physics
Nuclear Physics
Scientific paper
This experiment is part of a program investigating a possible reason why the gamma-ray signature of the ^22Na nucleus, supposedly produced in nova explosions as part of the Ne-Na cycle, has not been observed by satellite-based gamma-ray telescopes. One possible explanation is that its precursor, ^22Mg, may be depleted via the proton capture reaction ^22Mg(p,γ )^ 23Al. This reaction rate is not currently known. This experiment provides necessary input for indirectly determining this rate by studying its mirror system through the neutron transfer reaction ^13C (^22Ne,^ 23Ne)^ 12C. The TAMU K500 cyclotron was used to produce a ^12C beam at 127 MeV which bombarded a 100μ g/cm^2 ^13C target. The elastic scattering and neutron transfer reaction, ^13C(^12C,^ 13C)^ 12C, were measured using the MDM spectrometer. Detailed angular distributions were obtained for a broad range of angles using Raytracing. The elastic scattering data is used to extract the parameters of the Woods-Saxon or double-folded optical model potentials. The transfer reaction allows us to extract the ANCs for the ^13C->^12C+n system. This result is used to help determine the ^23Al->^22Mg+p system ANCs which allows the astrophysical S-factor and stellar reaction rates to be determined.
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