Differences in liner performance at ATLAS current levels

Summary form only given. Examination of the different simulations and comparison with the limit data suggest there is a change in the form of the dynamics exhibited by the liner as we move from the PEGASUS to ATLAS drive conditions. At present there appear to be two distinct forms for the liner behavior. One mode is characterized by a well-defined surface where the bulk of the linear development is caused by either elastic/plastic flow or fluid flow of melted material. The second mode appears when there is rapid and non-uniform heating of the outer layers of the liner. This produces an ill defined outside surface with lower density (10-30% solid) regions surrounding near solid density structures. This paper will show the simulations and associated data that support this bi-modal description of liner behavior. We will attempt to related this shift in behavior to the rate of ohmic heating relative to the hydrodynamic timescales and examine its impact on the effects of magneto-Rayleigh-Taylor instabilities.