C<sub>r</sub>在晶体基质中一般以三价离子形式存在,它的能级结构、光谱及其激光行为等都为人熟知。C<sub>r</sub><sup>3+</sup>一般在O<sup>2-</sup>六配位之中,在可见到近红外(1μ...C<sub>r</sub>在晶体基质中一般以三价离子形式存在,它的能级结构、光谱及其激光行为等都为人熟知。C<sub>r</sub><sup>3+</sup>一般在O<sup>2-</sup>六配位之中,在可见到近红外(1μm内)有两个吸收峰,并有一个辐射带。但对新的激光介质C<sub>r</sub>:Mg<sub>2</sub> Si O<sub>4</sub>的实验研究表明,其光谱用C<sub>r</sub><sup>3+</sup>的能级结构难以解释。特别是该晶体在1μm~1.3μm区域有一个强荧光带,对它的解释需要探讨新的机制。展开更多
A new method DV-X<sub>α</sub>-HF is proposed. The DV-X<sub>α</sub>-HF study of the cluster (BeCrO<sub>6</sub>)<sup>7</sup>-is reported for the first time. The single...A new method DV-X<sub>α</sub>-HF is proposed. The DV-X<sub>α</sub>-HF study of the cluster (BeCrO<sub>6</sub>)<sup>7</sup>-is reported for the first time. The single-electron energy eigenvalues, the crystal field sep-aration parameter 10D<sub>q</sub> and charge transfer transition energy are given. The DV-X<sub>α</sub>-HFmethod is also generalized to the multiplet calculation and configuration mixture. The calcu-lated values are in good agreement with the absorption spectrum experiments of laser crystalalexandrite. It is obvious that the combination of DV-X<sub>α</sub> wavefunction and double-electronoperator will probably provide a simple and effective method for the multiplet calculationof clusters.展开更多
文摘C<sub>r</sub>在晶体基质中一般以三价离子形式存在,它的能级结构、光谱及其激光行为等都为人熟知。C<sub>r</sub><sup>3+</sup>一般在O<sup>2-</sup>六配位之中,在可见到近红外(1μm内)有两个吸收峰,并有一个辐射带。但对新的激光介质C<sub>r</sub>:Mg<sub>2</sub> Si O<sub>4</sub>的实验研究表明,其光谱用C<sub>r</sub><sup>3+</sup>的能级结构难以解释。特别是该晶体在1μm~1.3μm区域有一个强荧光带,对它的解释需要探讨新的机制。
文摘A new method DV-X<sub>α</sub>-HF is proposed. The DV-X<sub>α</sub>-HF study of the cluster (BeCrO<sub>6</sub>)<sup>7</sup>-is reported for the first time. The single-electron energy eigenvalues, the crystal field sep-aration parameter 10D<sub>q</sub> and charge transfer transition energy are given. The DV-X<sub>α</sub>-HFmethod is also generalized to the multiplet calculation and configuration mixture. The calcu-lated values are in good agreement with the absorption spectrum experiments of laser crystalalexandrite. It is obvious that the combination of DV-X<sub>α</sub> wavefunction and double-electronoperator will probably provide a simple and effective method for the multiplet calculationof clusters.