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By conducting systematic large-scale relativistic studies of a
portion of the spectra including the ground state, the MCDHF/MCHF
Collection aims at creating accurate ab initio collection of
atomic transition data of the light atoms
A detailed agreement between ab initio methods for computing atomic
spectroscopic data and experiment requires the relativistic effects
to be included even in light atoms. In addition, fine structure
levels, inter-combination lines, and lifetimes of some levels can be
accurately determined only by considering the relativistic effects
(spin-orbit, spin-spin, and spin-other-orbit) and all computed data
have included them.
2001-10-11