Investigating Single-Particle Structure in $^{26}Na$ Using the New SHARC Array

Abstract : The changing of the nuclear shells for light, neutron-rich nuclei, and the single-particle nature of 26Na, has been explored by studying 25Na(d, p)26Na in inverse kinematics, using a beam of 25Na ions at 5 MeV per nucleon, provided by the ISAC-II facility at TRIUMF, Vancouver. Charged particles were detected with a highly-segmented silicon array that surrounded the 0.5 mg/cm2 (CD2)n target. Gamma rays from the recoiling 26Na nucleus were detected using eight Compton-suppressed HPGe clover detectors. Recoil tagging was provided by an in-beam scintillation foil, downstream of the germanium array. A novel technique of utilising pγ- and pγγ-gating to extract proton angular distributions from states populated close in energy was employed with success. New states in 26Na that are populated directly have been identified, using γ-decay patterns. Shell model calculations for comparison to experimental results are ongoing, using different model bases.
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G. L. Wilson, W. N. Catford, C. Aa. Diget, N.A. Orr, A. Matta, et al.. Investigating Single-Particle Structure in $^{26}Na$ Using the New SHARC Array. Conference on Advances in Radioactive Isotope Science (ARIS2014) , Jun 2014, Tokyo, Japan. pp.020004, ⟨10.7566/JPSCP.6.020004⟩. ⟨in2p3-01501836⟩



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