Extended analysis of the Kr V spectrum

The spectrum of four-times-ionized krypton (Kr V) has been observed in the 230-4900 Å wavelength range, resulting in 91 new classified lines. We were able to identify 21 new energy levels belonging to the 4s24p5d, 4s24p5s, 4s24p6s, 4s24p5p and 4s4p24d configurations. Relativistic Hartree-Fock calculations were used to predict energy levels and transitions.