Glenzer S H, Landen O L, Neumayer P, Lee R W, Widmann K, Pollaine S W, Wallace R J, Gregori G, Höll A, Bornath T, Thiele R, Schwarz V, Kraeft W-D, Redmer R
L-399, Lawrence Livermore National Laboratory, University of California, P.O. Box 808, Livermore, California 94551, USA.
Phys Rev Lett. 2007 Feb 9;98(6):065002. doi: 10.1103/PhysRevLett.98.065002.
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.
我们展示了对固体密度等离子体中等离激元的首次集体X射线散射测量。来自等容加热铍的激光产生的窄带X射线谱线的前向散射光谱表明，等离激元频率是电子密度的灵敏度量。包含碰撞和细致平衡的动态结构计算与测量到的等离激元光谱相匹配，这表明该技术将能用于确定致密物质的状态方程和压缩性的新应用。
