First Biennial African Conference on Fundamental Physics and Applications

Measuring transitional matrix elements using first-order perturbation theory in Coulomb excitation

Not scheduled

15m

Auditorium 1, Brahms Street (Namibia University of Science and Technology)

Oral Presentation Nuclear and Particle physics

Speaker

Senamile Masango (University of the Western Cape (ZA))

Description

The low-energy structure of the stable light nucleus 20Ne has been examined using Coulomb excitation at the TRIUMF Facility in Vancouver, Canada. The highly-efficient and segmented TIGRESS HPGe gamma-ray array permits accurate Coulomb-excitation studies of the high-lying 2^+ state found in 20Ne. Beams of 20Ne(5+) at approximately 1.7x10^7 ions/s were accelerated to 3.235 MeV/u and bombarded onto a 1.56 mg/cm^2 110Pd target. Six TIGRESS HPGe clover detectors covering approximately 19% of 4(pi) were used to detect the gamma rays emitted in the de-excitation of the levels populated in beam and target nuclei, while scattered ions were detected using annular double-sided, CD-type silicon detector. The angular coverage of the silicon detector allows for a clean measurement of transitional matrix elements without second-order effects such as static quadrupole moment and nuclear polarizability.