我们目前的测量硬X射线在50-300 keV范围内从铜等离子体产生的100 fs，806 nm的激光脉冲在峰值强度~ 1016 W cm-2。表面粗糙度，即使在几十纳米的水平，示出影响的发射特性。粗糙靶的增强发射归因于光的去偏振以及由表面不规则性促进的额外吸收。
英文摘要：
We present measurements of hard x-rays in the 50-300 keV range from copper plasmas produced by 100 fs, 806 nm laser pulses at a peak intensity ~ 1016 W cm-2. Surface roughness, even at the tens of nanometer level, is shown to influence the emission characteristics. The enhanced emission from rough targets is attributed to depolarization of light as well as extra absorption facilitated by the surface irregularities.
Efficient hot electron generation via low-coherence lasers
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences（中国科学院上海光学精密机械研究所）；Shenzhen Campus of Sun Yat-sen University（中山大学深圳校区）；China Academy of Engineering Physics（中国工程物理研究院）；Institute of Applied Physics and Computational Mathematics（应用物理与计算数学研究所）
Enhanced hard X-ray emission from femtosecond laser irradiated microdroplets
我们从15 $μ$ m甲醇微滴和一个平面平板目标类似的原子组成在类似的激光强度的硬X射线发射的比较研究。液滴等离子体的硬X射线产额是固体等离子体的$\simeq$的35倍。对于从液滴产生硬X射线来说，大约10 ns和大约5%的主脉冲的预脉冲是必不可少的。在8 $\times10^{14}$ W cm $^{-2}$处从液滴测量到36 keV的热电子温度;需要三倍更高的强度以从具有类似组成的固体等离子体获得类似的热电子温度。我们使用1D PIC模拟获得定性相关的实验观察。
The generation of unexpected super-high energetic electrons at relativistic circularly polarized laser-solid interactions in the presence of large scale pre-plasmas
