Direct measurements of enhanced relativistic-electron-beam energy losses in warm-dense aluminum
Direct measurements of enhanced relativistic-electron-beam energy losses in warm-dense aluminum
复制标题
直接测量热致密铝中增强的相对论电子束能量损失
DOI：
10.1103/physrevlett.114.095004
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发表时间：
2015
影响因子：
8.6
通讯作者：
a. Morace,et al.
中科院分区：
文献类型：
--
作者：
X. Vaisseau;a. Debayle;J. J. Honrubia;S. Hulin;a. Morace,et al.
本文测量了相对论电子束在热密铝中传输的能量损失，测量范围为电子束流密度（时间平均）。通过冲击压缩来加热样品。与未驱动的冷固体目标相比，不同的初始电阻率和瞬态电阻率（在电子传输过程中目标加热时）的作用在实验数据中是直接可观察到的，并且通过描述冲击压缩和电子束产生和传输的流体动力学的一组全面的模拟来再现。我们测量了19%的增加，在温暖的密集相比，相同面积质量的冷固体样品的电子电阻能量损失。
Energy loss in the transport of a beam of relativistic electrons in warm dense aluminum is measured in the regime of ultrahigh electron beam current density over(time averaged). The samples are heated by shock compression. Comparing to undriven cold solid targets, the roles of the different initial resistivity and of the transient resistivity (upon target heating during electron transport) are directly observable in the experimental data, and are reproduced by a comprehensive set of simulations describing the hydrodynamics of the shock compression and electron beam generation and transport. We measured a 19% increase in electron resistive energy loss in warm dense compared to cold solid samples of identical areal mass.