Properties of Bound States of Atomic Negative Ions (Physics)

亚稳负离子激发态的精确理论寿命是激发探测和测量这些物种的迫切需要。计算将使用相对论-多体相结合的方法对碱土和其他原子离子进行。采用Dirac-Breit哈密顿量，采用微扰CI技术引入多体效应。束缚旋量是相对论屏蔽的类氢函数，连续体旋量是用具有交换的冻结核模型产生的。应用重点将集中在准确计算镁、钙、锌、锰、磷和S的能级和电偶极跃迁。低Z物种将使用非相对论多体理论和泡利近似的组合来处理。高Z候选者将使用完全相对论多体理论来探索。

Accurate theoretical lifetimes of the excited states of metastable negative ions states are sorely needed to stimulate the detection and measurement of these species. Calculations will be performed on the alkaline earth and other atomic ions using a combined relativistic-many-body methodology. The Dirac- Breit Hamiltonian is used and many-body effects introduced using a perturbation-CI technique. The bound spinors are relativistic screened hydrogenic functions and the continuum spinors are generated using a frozen core model with exchange. Applications will focus on accurate calculations of energy levels and electric dipole transitions for Mg-, Ca-, Zn-, Mn-, P-, and S-. Low Z species will be treated using a combination of non-relativistic many body theory and the Pauli approximation. High Z candidates will be explored using the full relativistic many-body theory.