Laboratory Modeling of Bubble Propagation Systems

The use of scaled, field access bubble propagation systems has been proposed for examining the details of bubble conduction schemes. It has been argued that such scaling cannot represent size dependent effects, cannot include the influence of bubble dynamics, and does not lend itself to including interactions between bubble and overlay. In this report we describe a large,appropriately scaled T‐bar model which includes bubble interactions. It is shown that scaling effects are not significant, that bubble position is essentially determined by magnetostatic equilibrium and that the scale model can serve as a valuable tool in studying the design and extension of field access devices.