RUI: Photoionization of Excited States of Atoms and Ions

利用Hartree Slater波函数计算原子和离子激发态在hv、n、1、核电荷和电离阶段的宽范围内的光电电离截面和光电角分布不对称参数。振荡器强度和离散到离散的跃迁也将被研究。调查将集中在理解的变化的系统的横截面和角分布在周期系统。哈特里福克将对这些交易中的任何一笔进行计算，这可能是有保证的，以获得更高的准确性。等电子序列将被用来研究氢行为的逐渐变化。在异核和等离子序列上的光离模式的变化也将被研究。为了充分了解光子与物质的相互作用，辐射复合截面。因此，研究光电离的每个系统也将研究辐射复合。目前所采用的方法有一些限制，因为由于收敛的数值问题，对非常高激发态的研究变得不可能，为了克服这种计算限制，将尝试建立一种基于量子缺陷理论的新方法。

Photoionization cross sections and photoelectric angular distribution asymmetry parameters will be calculated for excited states of atoms and ions over a broad range of hv, n, 1, nuclear charge and stage of ionization, employing Hartree Slater wave functions. Oscillator strengths and discrete to discrete transitions will also be studied. The investigation will focus on understanding the systematics of variation of the Cross sections and angular distributions over the periodic system. Hartree Fock calculations will be done for any of these transactions, as may be warranted, for greater accuracy. Isoelectronic sequences will be investigated to study the gradual change in behavior towards hydrogenic. Changes in photoionization pattern over isonuclear and iso-ionic sequences will also be looked into. To fully understand the interaction of photons with matter, radiative recombination cross sections. Consequently every system investigated for photoionization will also be investigated for radiative recombination. The method at present employed is a little restrictive in the sense that a study of the very highly excited states becomes impossible due to a numerical problem of convergence, To overcome this computational limitation, an attempt will be made at formulating a new methodology based on the quantum defect theory.