Fig. 2

Details of the foam expansion. One-dimensional particle-in-cell simulation of an intense laser pulse irradiating an encapsulated nanofoam target. Laser comes from z = 0, foam located at 6–8 μm; shown are a electron velocity phase space at 100 fs; b ion velocity phase space at 500 fs; details of ion phase space in foam at c–f 100–400 fs