| Autor: |
Shao-yong Tu, Guang-yue Hu, Wen-yong Miao, Bin Zhao, Jian Zheng, Yong-teng Yuan, Xia-yu Zhan, Li-fei Hou, Shao-en Jiang, Yong-kun Ding |
| Předmět: |
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| Zdroj: |
Physics of Plasmas; Apr2014, Vol. 21 Issue 4, p1-8, 8p, 2 Diagrams, 1 Chart, 8 Graphs |
| Abstrakt: |
A new target configuration is proposed to generate efficient multi-keV x-ray source using multiple thin foils as x-ray emitters. The target was constructed with several layers of thin foils, which were placed with a specific, optimized spacing. The thin foils are burned though one by one by a nanosecond-long laser pulse, which produced a very large, hot, underdense plasma. One-dimensional radiation hydrodynamic simulations show that the emission region and the multi-keV x-ray flux generated by multi-layer thin foil target are similar to that of the low-density gas or foam target, which is currently a bright multi-keV x-ray source generated by laser heating. Detailed analysis of a range of foil thicknesses showed that a layer-thickness of 0.1 μm is thin enough to generate an efficient multi-keV x-ray source. Additionally, this type of target can be easily manufactured, compared with the complex techniques for fabrication of low-density foam targets. Our preliminary experimental results also verified that the size of multi-keV x-ray emission region could be enhanced significantly by using a multi-layer Ti thin foil target. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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