Au激光等离子体0.3～0.4nmrnX射线发射谱模拟

摘要

The X-ray spectra emitted from laser-produced Au plasmas in the range 0.3～0.4nm are analyzied and interpreted by using the Spin-Orbit-Splitted Array model. The plasmas are created by using a beam of a frequency-tripled 1.05μm Nd-glass laser focused onto a microdot target of gold.The pulse width was 800ps and the laser energy is about 12J. The emitted X-ray is 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 is obtained from the intensity ratio of two unresolved transition arrays, and the experimental spectra is simulated．%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。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的电子温度。