Supersonic propagation of ionization waves in an underdense, laser-produced plasma
Supersonic propagation of ionization waves in an underdense, laser-produced plasma
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DOI：
10.1063/1.1927540
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发表时间：
2004-10
影响因子：
2.2
通讯作者：
C. Constantin;C. Back;K. Fournier;G. Gregori;O. Landen;S. Glenzer;E. Dewald;M. Miller
中科院分区：
文献类型：
--
作者：
C. Constantin;C. Back;K. Fournier;G. Gregori;O. Landen;S. Glenzer;E. Dewald;M. Miller
观察到激光驱动的超音速电离波在亚临界密度的毫米级等离子体中传播，电子温度高达2-3keV。最初的传播速度是声速的十倍，通过时间分辨x射线成像诊断来测量。测量的电离波轨迹用二维辐射-流体动力学代码进行了解析建模。与模拟结果的比较表明，非局部热输运效应可能有助于热波传播的衰减。
A laser-driven supersonic ionization wave propagating through a millimeter-scale plasma of subcritical density up to 2–3keV electron temperatures was observed. Propagation velocities initially ten times the sound speed were measured by means of time-resolved x-ray imaging diagnostics. The measured ionization wave trajectory is modeled analytically and by a two-dimensional radiation-hydrodynamics code. The comparison to the modeling suggests that nonlocal heat transport effects may contribute to the attenuation of the heat-wave propagation.