Radiation reaction effects on ion acceleration in laser foil interaction

The radiation reaction effects on ion acceleration in laser foil interaction are investigated via analytical modeling and multi-dimensional particle-in-cell simulations. We find that the radiation effects are important in the area where some electrons move backward due to a static charge separation field at a laser intensity of 1022 W cm-2. Radiation reaction tends to impede these backward motions. In the optical transparency region, ion acceleration is enhanced when the radiation effects are considered.