Analysis of Charge State Distribution by Non-Local Thermodynamic-Equilibrium Spin-Orbit-Split-Array Collisional Radiative Model

A collisional radiative model based on the spin-orbit-split-arrays is used to determine the charge state distribution of gold plasmas. The ab initio atomic structure code of Cowan and the spin-orbit-split-array model were used to calculate all the emission spectra of the different gold species, and a non-local thermodynamic-equilibrium model was coupled to calculate the ion populations at a given plasma density and electron temperature. The charge state distribution and other plasma parameters were determined by comparing the experimental spectra with the theoretical simulated soectra of gold plasmas.     

有关重复排列的一类计数问题

利用生成函数解决了从n个元素的集合中任意重复选取r个元素且这r个元素中含有不同元素的个数一定时，所构成的不同r-序列的方法数．     

Super-edge-graceful Labelings of Some Cubic Graphs

The notion of super-edge-graceful graphs was introduced by Mitchem and Simoson in 1994.However, few examples except trees are known. In this paper, we exhibit two classes of infinitely many cubic graphs which are super-edge-graceful. A conjecture is proposed.     

全对称实可逆矩阵的逆矩阵的一种求法

将全对称实可逆矩阵按照其阶次的奇偶性进行不同的分块处理,再根据各子块及排列矩阵的性质可通过更低阶次矩阵的逆矩阵分块表出原全对称实矩阵的逆矩阵.     

花儿为什么这样红——浅谈“颜色”概念

 “花儿为什么这样红?……”花儿为什么有红、有黄、有白?自然界中物质为什么会呈现五彩缤纷的颜色呢?还得从电磁波谱说起。我们都知道,将电磁波按其波长的长短依次排列起来就形成了电磁波谱。能引起我们视觉的只有其中很小一个范围的电磁波,我们称其为可见光(波长在3800埃一7800埃)。不同波长的光在我们视网膜上能产生不同的效应,正是这些效应给我们以颜色的感觉。     

THE PERMUTATION FORMULA OF SINGULAR INTEGRALS WITH BOCHNER-MARTINELLI KERNEL ON STEIN MANIFOLDS

Using the method of localization, the authors obtain the permutation formula of singular integrals with Bochner-Martinelli kernel for a relative compact domain with C(1) smooth boundary on a Stein manifold. As an application the authors discuss the regularization problem for linear singular integral equations with Bochner-Martinelli kernel and variable coefficients; using permutation formula, the singular integral equation can be reduced to a fredholm equation.     

Bergman Clusters Related to Bulk Amorphous Alloys and Quasi—crystals

The fcc Zr2Ni and MgCu2-type phases, as primary crystallization phases from some bulk amorphous alloys, have similar Bergman clusters in the first-two-shell atomic arrangement, which also appears in the hp MgZn2-type Laves phase coexisting with icosahedral quasi-crystals in the TiZrNi system. Therefore, Bergman cluster may be a bridge linking bulk amorphous alloys and quasi-crystals. The stability of the Bergman clusters Zr31Ni14, Mg31Cu14 and Mg18Zn27 can be reflected by density of states at the Fermi level and distribution of charge density on the plane of (100) calculated by local density functional theory.     

基态H_2~－（X~2_U~＋）的ACQM计算

基态Ｈ_２~－（Ｘ~2_U~＋）的ＡＣＱＭ计算俞华根（中国科学院，成都有机所，６１００６５）关键词：排列通道量子力学，通道波函数，１９７７年，Ｌｅｖｉｎ和Ｋｒｇｅｒ￣［１］首次将排列通道量子力学（ＡＣＱＭ）方法用于计算和Ｈ＿２基态势能曲线后，经改进的ＡＣ?..     

3-fold Morse序列的因子复杂度以及与其相似的一个排列（英文）

我们证明3-fold Morse序列的一些性质,并且给出它的子词复杂度公式.此外,通过迭代一个映射产生一个实数序列,我们研究它的一些性质.最终证明这个实数序列与3-fold Morse产生相同的无穷排列.