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A superconducting solenoidal fusion product separator, based on a 6.5 T solenoid, has been developed at the Australian National University to enable separation and detection of evaporation residues following heavy-ion fusion reactions. This device, with an angular coverage of 0:4529:5 3 , produces a spatial separation between the fusion products and the intense background of elastically scattered beam particles. Its high efficiency allows precise measurement of nuclear fusion cross-sections, as well as being ideal for evaporation residue coincidence measurements. The essential features of the system and the first results obtained are described.

The design and operation of apparatus for measurements of in-beam hyperfine interactions and nuclear excited-state g factors is described. This apparatus enables a magnetic field of about 0.1 tesla to be applied to the target and the target temperature to be set between ∼ 4 K and room temperature. Design concepts are developed mainly in terms of transient-field g-factor measurements following Coulomb excitation by the implantation perturbed angular correlation (IMPAC) technique. The formalism for perturbed angular correlations is outlined and a figure of merit for optimizing these measurements is derived to inform design. Particle detection is based on the use of silicon photodiodes of rectangular shape. The particle-γ angular correlation formalism for this case is described. The experimental program to date includes temperature-dependent studies of hyperfine fields, transient-field g-factor measurements, and time-dependent perturbed angular distribution (TDPAD) studies.

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