Journal Article

The linear theory of the incompressible Rayleigh-Taylor instability in elastic-plastic solid slabs is developedon the basis of the simplest constitutive model consisting in a linear elastic (Hookean) initial stage followed by arigid-plastic phase. The slab is under the action of a constant acceleration, and it overlays a very thick ideal fluid.The boundaries of stability and plastic flow are obtained by assuming that the instability is dominated by theaverage growth of the perturbation amplitude and neglecting the effects of the higher oscillation frequenciesduring the stable elastic phase. [...]

We propose and demonstrate the use of random phase plates (RPPs) for high-energy sub-picosecond lasers. Contrarily to previous work related to nanosecond lasers, an RPP poses technical challenges with ultrashort-pulse lasers. [...]