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Shock ignition (SI) is a new approach to Inertial Confinement Fusion (ICF) based on \uddecoupling the compression and ignition phase. The last one relies on launching a strong shock \udthrough a high intensity laser spike (≤ 1016 W/cm2) at the end of compression. In this paper, \udfirst we described an experiment performed using the PALS iodine laser to study laser-target \udcoupling and laser-plasma interaction in an intensity regime relevant for SI. A first beam with \udwavelength λ = 1.33 µm and low intensity was used to create an extended preformed plasma, \udand a second one with λ = 0.44 µm to create a strong shock. Several diagnostics characterized \udthe preformed plasma and the interaction of the main pulse. Pressure up to 90 Mbar was \udinferred. In the last paper of the paper, we discuss the relevant steps, which can be followed in \udorder to approach the demonstration of SI on laser facilities like LMJ

Preliminary results from recent experiments and future roadmap to Shock Ignition of Fusion Targets