Observations of plasmons in warm dense matter
Observations of plasmons in warm dense matter
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DOI：
10.1103/physrevlett.98.065002
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发表时间：
2007-02-09
影响因子：
8.6
通讯作者：
Redmer, R.
中科院分区：
文献类型：
--
作者：
Glenzer, S. H.;Landen, O. L.;Redmer, R.
我们提出了固体密度等离子体中等离子体的第一次集体x射线散射测量。等时加热铍激光产生的窄带x射线线的前向散射光谱表明，等离子体频率是电子密度的一个敏感指标。包括碰撞和详细平衡在内的动态结构计算与测量的等离子体谱相匹配，表明该技术将使确定致密物质的状态方程和可压缩性的新应用成为可能。
We present the first collective x-ray scattering measurements of plasmons in solid-density plasmas. The forward scattering spectra of a laser-produced narrow-band x-ray line from isochorically heated beryllium show that the plasmon frequency is a sensitive measure of the electron density. Dynamic structure calculations that include collisions and detailed balance match the measured plasmon spectrum indicating that this technique will enable new applications to determine the equation of state and compressibility of dense matter.