Heating dynamics and extreme ultraviolet radiation emission of laser-produced Sn plasmas
Heating dynamics and extreme ultraviolet radiation emission of laser-produced Sn plasmas
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DOI：
10.1063/1.3458696
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发表时间：
2010-06
影响因子：
4
通讯作者：
S. Yuspeh;K. Sequoia;Y. Tao;M. Tillack;R. Burdt;F. Najmabadi
中科院分区：
文献类型：
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作者：
S. Yuspeh;K. Sequoia;Y. Tao;M. Tillack;R. Burdt;F. Najmabadi
通过实验和数值研究了 1.064 μm 激光吸收深度对 Sn 等离子体中加热和带内（2% 带宽）13.5 nm 极紫外发射的影响。观察到带内发射持续时间比激光脉冲长，并且观察到激光吸收和带内发射区域之间的分离。最大效率是通过对等离子体核心进行额外加热来实现的，以使最佳温度扩展到更低且光学更薄的密度。与相同应用中二氧化碳产生的等离子体源相比，这会导致更高温度的等离子体发出更少的带内光。
The impact of 1.064 μm laser absorption depth on the heating and in-band (2% bandwidth) 13.5 nm extreme ultraviolet emissions in Sn plasmas is investigated experimentally and numerically. In-band emission lasting longer than the laser pulse and separation between the laser absorption and in-band emission region are observed. Maximum efficiency is achieved by additional heating of the core of the plasma to allow the optimal temperature to expand to a lower and more optically thin density. This leads to higher temperature plasma that emits less in-band light as compared to CO2 produced plasma sources for the same application.