A-B Phase Boundary Experiments
The A-B phase boundary in superfluid 3He
The A-B transition is an exemplar first-order phase boundary. To date, we have measured the latent heat, surface tension, inter-phase contact angle at cell walls, and heterogeneous nucleation phenomena. Most recently, we have made a magnetic 'trap' so that the transition from the B to A phase can be induced away from the container wall, free from the influence of any impurities or defects. These will be the first ever measurements of such pure homogeneous nucleation.
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