Shock Ion acceleration through the Relativistic Transparency in a destructed target

We investigate ion acceleration from an interaction between an ultra-short circularly polarized pulse and a destructed target using a laser ASE or primary pulse by means of 1D PIC simulations. When the relativistic transparency takes place on the compressed ion layer, high velocity ion layer passes through a high temperature upstream region as a shock sustaining proper Mach number. This shock generates quasi-monoenergetic ion beam and accelerates light ions for a long time without driving laser pressure