Nondipole and Quantum Confinement Effects in Atomic Spectra

该项目旨在促进对原子光电离中非偶极偶极（E1）-四极（E2）干涉效应的理解，促进对量子受限结构的理解，并促进北亚拉巴马大学的研究和教育的整合。具体而言： 了解在nd和/或nf轨道坍缩的原子（基本上所有的过渡和稀土原子）中巨大的四极自电离共振区域中E1-E2效应的强度。 建立四极里德伯结构与迄今为止知之甚少或一无所知的巨大四极自电离共振相互作用的行为趋势。 了解大范诺原子偶极自电离极小区的E1-E2效应 轮廓参数q。如在T1中那样，谐振最大值，因此可能导致远离谐振最大值的强E1-E2效应。 在不完全短程限制屏蔽条件下，发展受限原子系统的量子亏损理论。 新的独特类别的通道间现象出现， 到里德伯态和腔相关共振之间的交叉有望被揭示。 为了解决原子光谱学的基础， 不完全带电量子限制 研究中采用了Hartree-Fock近似和多体无规相位交换近似。UNA本科生将积极从事研究。

This project aims at advancing the understanding of nondipole dipole (E1)-quadrupole (E2) interference effects in atomic photoionization, at advancing the understanding of quantum confined structures, and at fostering integration of research and education at the University of North Alabama. Specifically: To learn about the strength of E1-E2 effects in regions of gigantic quadrupole autoionizing resonances in atoms developing nd and/or nf orbital collapse (essentially all transition and rare-earth atoms). To establish trends in the behavior of quadrupole Rydberg structures interacting with gigantic quadrupole autoionizing resonances of which little or nothing is known to date. To learn about E1-E2 effects within dipole autoionizing minima in atoms with large Fano profile parameter q. nance maxima, as in Tl, thus possibly resulting in strong E1-E2 effects far off the resonance maxima. To develop a quantum defect theory of confined atomic systems under conditions of incomplete short-range confining screening. New unique classes of interchannel phenomena arising due to crossings between Rydberg states and cavity related resonances are expected to be revealed. To work out the foundations of spectroscopy of atoms A trapped under conditions of incomplete charged quantum confinement. Hartree-Fock approximations and the many-body random phase approximation with exchange (RPAE) will be employed in the study. UNA undergraduate students will actively be engage in research.