Au激光等离子体0.3~0.4nm范围X射线发射谱模拟
Modeling the spectra of laser-produced Au plasmas in the range 0.3-0.4nm
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摘要: 应用自旋-轨道劈裂不可分辨跃迁组理论对高离化Au元素激光等离子体0.3~0.4nm范围的X射线发射谱进行了分析和解释。采用单温局域热动平衡近似,对实验谱进行理论模拟,并根据不可分辨跃迁组强度比得到等离子体电子温度。Abstract: The X-ray spectra emitted from laser-produced Au plasmas in the range 0.3-0.4nm were analyzied and interpreted by using the Spin-Orbit-Splitted Array model. The plasmas were created by using a beam of a frequency-tripled 1.05m m Nd-glass laser focused onto a microdot target of gold.The pulse width was 800ps and the laser energy was about 12J. The emitted X-ray was analyzed by a pentaerythritol(PET) crystal spectrograph and recorded on Tianjing New-III X-ray films. On the assumption of the mono-temperatured local-thermodynamical-equilibrium approximation, the electronic temperature was obtained from the intensity ratio of two unresolved transition arrays, and the experimental spectra were simulated.
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Key words:
- laser-produced au plasmas /
- unresolved transition arrays /
- spectral simulation /
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