Electric quadrupole transitions in Fe XVI, Co XVII and Ni XVIII

Relativistic quantum defect orbital study of forbidden transitions in Co16+

“…The S-values for the np 2 P o − n f 2 F o transitions with n = 3-6 and n = 4-7 are also collected in Table 3. Again, a general good accord between the set of RQDO f -values and those reported by Tull et al (1972) is found, the discrepancies being less than 6%, with the only exception of the 3p 2 P o − 6f 2 F o and 3p 2 P o − 7f 2 F o multiplets, where they amount to about 17% and 36%, respectively, and both of these correspond to very small values. The RQDO results for the nd 2 D -n d 2 D transitions with n = 3-6 and n = 4-7 have a relative deviation with respect to the HF results (Tull et al 1972) of less than 5%.…”

“…1, where the multiplet line strengths obtained in the present calculations are compared with the theoretical results reported by Tull et al (1972). The RQDO/HF S-values ratios are plotted on a logarithmic scale versus log S RQDO .…”

“…Results for the ns 2 S-n d 2 D transitions with n = 3-5 and n = 3-7 are displayed in Table 3, where a fairly good agreement between the RQDO S-values and the ones by Tull et al (1972) for most of the doublet-doublet transitions are found. The discrepancies are less than 10%.…”

“…Earlier results are given in the second column. These comprise the multiplet Hartree-Fock strengths reported by Tull et al (1972).…”

“…To our knowledge, there are no recent calculations or measurements of transition probabilities for forbidden lines in Co 16+ . Earlier data are the multiplet S-values calculated by Tull et al (1972) with a Hartree-Fock procedure of frozen-core type, and a critical compilation by Fuhr et al (1988) of transition probability data and S-values for forbidden lines of Co 16+ among other ions. The results adopted by Fuhr et al (1988) are calculations dating from 1965 (Krueger & Czyzak) and 1972 (Tull et al).…”