N. I. Ashwood

Structure of Be-12: Intruder d-wave strength at N=8

The breaking of the N=8 shell-model magic number in the 12Be ground state has been determined to include significant occupancy of the intruder d-wave orbital. This is in marked contrast with all other N=8 isotones, both more and less exotic than 12Be. The occupancies of the [FORMULA: SEE TEXT]orbital and the [FORMULA: SEE TEXT], intruder orbital were deduced from a measurement of neutron removal from a high-energy 12Be beam leading to bound and unbound states in 11Be.

TIARA: A large solid angle silicon array for direct reaction studies with radioactive beams

A compact, quasi-4pi position sensitive silicon array, TIARA, designed to study direct reactions induced by radioactive beams in inverse kinematics is described here. The Transfer and Inelastic All-angle Reaction Array (TIARA) consists of 8 resistive-strip silicon detectors forming an octagonal barrel around the target and a set of double-sided silicon-strip annular detectors positioned at each end of the barrel. The detector was coupled to the gamma-ray array EXOGAM and the spectrometer VAMOS at the GANIL Laboratory to demonstrate the potential of such an apparatus with radioactive beams. The 14N(d,p)15N reaction, well known in normal kinematics, has been carried out in inverse kinematics for that purpose. The observation of the 15N ground state and excited states at 7.16 and 7.86 MeV is presented here as well as the comparison of the measured proton angular distributions with DWBA calculations. Transferred l-values are in very good agreement with both theoretical calculations and previous experimental results obtained in normal kinematics.

Structure of

The low-lying level structure of the unbound neutron-rich nucleus

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Be probed via secondary beam reactions

Be has been investigated via breakup on a carbon target of secondary beams of

Migration of Nuclear Shell Gaps Studied in the d(Ne-24, p gamma)Ne-25 Reaction

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{alpha}-decaying states {sup 18}O, {sup 20}Ne and {sup 22}Ne in {sup 18}O beam induced reactions

B at 35 MeV/nucleon. The coincident detection of the beam velocity

Cluster breakup of 18O and 22Ne

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Nucleon transfer via (d,p) using TIARA with a 24Ne radioactive beam

Be fragments and neutrons permitted the invariant mass of the

B(E1) Strengths from Coulomb excitation of 11Be

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