Direct observation of strong ion coupling in laser-driven shock-compressed targets. by Ravasio, A, Gregori, G, Benuzzi-Mounaix, A, Daligault, J, Delserieys, A, Faenov, A, Loupias, B, Ozaki, N, Rabec le Gloahec, M, Pikuz, T, Riley, D, Koenig, M