Calculation of atomic energy level values

Title of program: LEVEL
Catalogue Id: AAKD_v1_0

Nature of problem
An atomic energy level array consists of two sets of energy levels of different parity and transitions between them (we exclude transitions within sets). There are wide variations in the accuracies of the wave number values of observed classified transitions, and usually many more observed transitions than energy levels. The problem is to determine the best values for the levels and their uncertainties. The uncertainties are very important because these are used to determine the accuracies of wa ...

Versions of this program held in the CPC repository in Mendeley Data
AAKD_v1_0; LEVEL; 10.1016/0010-4655(72)90048-3

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

程序标题：LEVEL

目录编号：AAKD_v1_0

问题性质
原子能级数组由两组不同奇偶性的能级及其间的跃迁组成（我们排除了组内跃迁）。观测到的分类跃迁的波数值精度存在显著差异，通常观测到的跃迁数量远多于能级数量。问题在于确定能级的最佳值及其不确定性。不确定性极为重要，因为这些不确定性被用于确定波数值的精度。

本程序的不同版本存储于Mendeley Data的CPC代码库中
AAKD_v1_0; LEVEL; 10.1016/0010-4655(72)90048-3

该程序已从贝尔法斯特女王大学（1969-2018年）所持有的CPC程序库中导入。