Theoretical study of the correlation and relativistic effects in the shakeup in the photoelectron spectrum of cesium

摘要

Quasidegeneracy effects in the transitions in cesium are considered by relativistic and nonrelativistic CI calculations, and the interplay between correlation and relativistic effects is discussed. Dynamical correlation effects in the core shakeup are treated by nonrelativistic MCSCF calculations. Good agreement with experimental data is obtained and a revision of some features is suggested.