Vi. Azarov et al., ANALYSIS OF THE 3P(6)3D(2)NF (N=4-6) AND 3P(5)3D(4) CONFIGURATIONS OF5 TIMES IONIZED IRON (FE-VI), Physica scripta. T, 53(4), 1996, pp. 398-413
The spectrum of Fe VI has been observed in the 135-250 Angstrom region
on a 3 m grazing incidence spectrograph. More than 400 lines have bee
n classified as 3d(3)-3d(2)(4f + 5f + 6f) + 3p(5)3d(4) transitions. Th
is allowed us to establish 169 new levels, including 43 and 32 levels
belonging to the overlapping and strongly interacting 3d(2)4f and 3p(5
)3d(4) configurations. Seventy-three out of 81 levels of the 3d(2)5f c
onfiguration have been found. Parameters obtained from the least-squar
es-fitting calculations are presented and compared with the Hartree-Fo
ck values.