Influence of the two-electron transitions on the radiative lifetimes of excited levels in the boron isoelectronic sequence

The ions of the boron isoelectronic sequence (7⩽Z⩽45) are investigated using the configuration interaction method on the basis of transformed radial orbitals with a variable parameter. The energy spectra and the radiative lifetimes of the levels of configurations 2s2 2p, 2s2p2, 2p3 and 2s2 3l are obtained. The aim of the present work is the investigation of the influence of the two-electron transitions on the radiative lifetimes of levels of configuration 2s23p. It has been shown that the two-electron transitions are crucial for radiative lifetimes of these levels. The dependence of the influence on Z is discussed. The E2 transitions from 2s23p are also calculated for ions Z⩾25.

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