# Hyperfine structure parametrisation in Maple

## Description

Abstract In hyperfine structure examinations, routine high resolution spectroscopy methods have to be combined with exact fine structure calculations. The so-called magnetic A and electric B factor of the fine structure levels allow to check for a correct fine structure analysis, to find errors in the level designation, to find new levels and to probe the electron wavefunctions and its mixing coefficients. This is done by parametrisation of these factors into different contributions of the subshell el... Title of program: Hfs Catalogue Id: ADXD_v1_0 Nature of problem Atomic state functions of an many configuration many electron atom with several open shells are defined by a number of quantum numbers, by their coupling and selection rules such as the Pauli exclusion principal and parity conservation. The matrix elements of any one-particle operator acting on these wave functions can be analytical integrated up to the radial part [3]. The decoupling of the interacting electrons is general, the obtained submatrix element holds all the peculiarities of the opera ... Versions of this program held in the CPC repository in Mendeley Data ADXD_v1_0; Hfs; 10.1016/j.cpc.2004.11.007 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)