Angular-and energy-distributions of ions emitted from different plasma-focus (PF) devices of energy capacity ranging from 3.6 kJ to about 200 kJ are presented. Also compared are space-and timeresolved ion signals obtained from different PF facilities. Comparative studies show some similarity features in the ion emission characteristics.

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We give an overview of the different confinement regimes observed on ASDEX and compare the changes during the transition phases with qualitative tendencies suggested by theoretical models. The transitions discussed are those between purely Ohmic heating and additional heating in the L-regime, between the Land the H-regime, and between discharges with flat and peaked electron density profiles.

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