Direct observation of strong ion coupling in laser-driven shock-compressed targets.
Direct observation of strong ion coupling in laser-driven shock-compressed targets.
复制标题
DOI：
10.1103/physrevlett.99.135006
复制
发表时间：
2007-09
影响因子：
8.6
通讯作者：
A. Ravasio;Gérald Grégori;A. Benuzzi-Mounaix;J. Daligault;A. Delserieys;A. Faenov;B. Loupias;N. Ozaki;M. L. Gloahec;T. Pikuz;D. Riley;Michel Koenig
中科院分区：
文献类型：
--
作者：
A. Ravasio;Gérald Grégori;A. Benuzzi-Mounaix;J. Daligault;A. Delserieys;A. Faenov;B. Loupias;N. Ozaki;M. L. Gloahec;T. Pikuz;D. Riley;Michel Koenig
在这封信中，我们报告的近集体X射线散射实验冲击压缩目标。产生高度耦合的Al等离子体，并通过光谱解析由样品前向散射的X射线源来探测。弹性散射的强度显着减少，我们归因于形成一个初期的长程有序。这一推测证实了X射线散射计算占电子简并和强耦合效应。从后侧可见光诊断的测量结果与从X射线散射数据推断的等离子体参数是一致的。这些结果给出了稠密等离子体中强耦合离子动力学的实验证据。
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.