Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
Phys Rev Lett. 2009 Dec 11;103(24):245004. doi: 10.1103/PhysRevLett.103.245004. Epub 2009 Dec 10.
We present the first ultrafast temporally, spectrally, and angularly resolved x-ray scattering measurements from shock-compressed matter. The experimental spectra yield the absolute elastic and inelastic scattering intensities from the measured density of free electrons. Laser-compressed lithium-hydride samples are well characterized by inelastic Compton and plasmon scattering of a K-alpha x-ray probe providing independent measurements of temperature and density. The data show excellent agreement with the total intensity and structure when using the two-species form factor and accounting for the screening of ion-ion interactions.
我们呈现了首例超快时间分辨、光谱分辨和角度分辨的 X 射线散射测量结果，来自被冲击波压缩的物质。实验光谱给出了从测量得到的自由电子密度得出的绝对弹性和非弹性散射强度。激光压缩的氢化锂样品通过 K-alpha X 射线探针的非弹性康普顿和等离子体散射得到很好的描述，提供了温度和密度的独立测量。当使用两种物质的散射因子并考虑到离子-离子相互作用的屏蔽时，数据与总强度和结构吻合得非常好。
