混合物平均不透明度随温度及混合比例变化研究

Study on Mean Opacity of the Mixture with Temperature and Proportion

Au混合物是惯性约束聚变的间接驱动方法(ICF)中的密闭腔材料Au的理想替代物.利用考虑能级分裂的屏蔽氢离子模型(SHML),计算不同混合比例的Au-Gd和Au-Sm在温度分别为150,200,250,300和400eV,密度分别为0.1和1.0g/cm3时的Rosseland平均不透明度.在高温且密度较大时该计算值与DCA/UTA模型计算结果较为一致.

Au mixture is an ideal substitute for hohlraum material Au in the indirect-drive method of intertial confinement fusion （ICF）. The screened hydrogen model with I splitting is proposed to calculate the Rosseland mean opacity for Au-Gd and Au-Sm mixtures with different mixing proportion at high temperatures（ 150,200,250,300,400 eV） and with different density （0.1 and 1.0 g/ cm^3 ）. The results are in good agreement with theoretical calculations of DCA/UTA model at high temperatures and high density.