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The reason of discrepancy between the experimental and the theoretical relative intensities of the 3p!2p electric quadrupole emission with respect to dipole 3s!2p emission for transition elements is investigated in relativistic conguration interaction approximation. The enhancement of theoretical intensity of quadrupole transitions by 4n6 times is obtained. It is shown that their relative intensity increases with the atomic number. In the single conguration approximation the dipole and the quadrupole transitions are separated in energy, but taking into account the conguration mixing their energy intervals extend and overlap. The dipole CI satellites with intensity exceeding the intensity of quadrupole transitions appear in their region, thus their separation becomes hardly possible.

On the existence of dipole satellites in the region of M2,3-L2,3non-dipole emission lines for transition elements

On the existence of dipole satellites in the region of M_2,3-L_2,3non-dipole emission lines for transition elements