Direct observation of strong ion coupling in laser-driven shock-compressed targets

作者：Ravasio A^*; Gregori G; Benuzzi Mounaix A; Daligault J; Delserieys A; Faenov A Ya; Loupias B; Ozaki N; Rabec le Gloahec M; Pikuz T A; Riley D; Koenig M

来源：Physical Review Letters, 2007, 99(13): 135006.

DOI：10.1103/PhysRevLett.99.135006

In this Letter we report on a near collective x-ray scattering experiment on shock-compressed targets. A highly coupled Al plasma was generated and probed by spectrally resolving an x-ray source forward scattered by the sample. A significant reduction in the intensity of the elastic scatter was observed, which we attribute to the formation of an incipient long-range order. This speculation is confirmed by x-ray scattering calculations accounting for both electron degeneracy and strong coupling effects. Measurements from rear side visible diagnostics are consistent with the plasma parameters inferred from x-ray scattering data. These results give the experimental evidence of the strongly coupled ionic dynamics in dense plasmas.

• 出版日期2007-9-28
• 单位中国地震局