Al激光等离子体电子密度的空间分辨诊断
Space-resolved diagnosis for the electron density of laser-produced aluminum plasma
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摘要: 采用20 μm的狭缝配平面晶体谱仪构成空间分辨光谱测量系统，对Al激光等离子体的K壳层发射谱进行测量。利用Al的Ly-α线谱的翼部Stark展宽效应推得电子密度空间分布轮廓，建立了翼部Stark展宽法测量高密度等离子体电子密度的诊断技术。Abstract: The K-shell emission lines of laser-produced aluminum plasma were measured by the space-resolved spectrometer, which was constructed by a flat crystal spectrometer with a 20 μm-wide slit. The electron density profile beyond the critical density is obtained by fitting the Stark-broadened line wings of hydrogenic ions, then the diagnostics on high electron density has been developed tentatively.
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Key words:
- laser-produced plasma /
- stark-broadened wings /
- electron density /
- x-ray spectroscopy
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