Revised Absolute ƒ-VALUES for λ3247 of Neutral Copper and λ3720 of Neutral Iron

f-Value Measurements for 3d-Elements

“…The relative scale (more exactly: the arc temperature) and the absolute scale of these measurements was determined by use of lifetimes and transition probabilities from refs. [4, 63,68,70,82,83,1031; in addition, the temperature of the arc was found to agree with that derived from LTE diagnostics. Similarly, Richter and Wulff [120] and, later, May et al [121] extended the measurements of Garz and Kock [5] and those of Bridges and Kornblith [119] to over 1000 weaker lines.…”

“…The technique has been perfected by Bell and Tubbs and colleagues at Harvey Mudd College. Reliable oscillator strengths for resonance lines of Sc I [62], Fe I [63] and Ti I [64] are now available. Similar results for V I have also been reported from Kiel by Mie and Richter [65].…”

Time-resolved FTIR emission spectroscopy of Cu in the 1800–3800 cm−1region: transitions involving f and g states and oscillator strengths

“…The temporal dynamics of several lines is shown in Figure 2. While the temporal decay of some lines can be fitted, at least roughly, by an exponential function (Curtis and Theodosiou, 1989) b Laser-induced fluorescence from sputtered metal vapors (Hannaford and Lowe, 1983) c Numerical Coulomb-like approximation (Lindgård et al, 1980) d Relativistic Hartree-Fock calculation with account for core polarisation effects (Migda lek and Baylis, 1978) e Relativistic Hartree-Fock calculation with model potential accounting for exchange and core polarisation (Migda lek, 1978) f Relativistic Hartree-Fock calculation with model potential and core polarisation (Migda lek and Baylis, 1979) g Calculation using the level-crossing measurement of lifetimes and configuration coupling coefficient deduced by fitting other experimental measurements of lifetimes and relative oscillator strengths (Siefart et al, 1974) h Atomic absorption measurements on flames (Lvov, 1970) i Atomic-beam absorption (Bell and Tubbs, 1970) j Critical survey of experimentally-determined oscillator strengths (Corliss, 1970) k Curves of growth in absorption measurement (Moise, 1966) l Rozhdestvenskii's hook method (Slavenas, 1966) m Atomic-beam absorption (Bell et al, 1958) n Arc emission measurements (Allen and Asaad, 1957) a Time profile demonstrates significant deviation from the exponential decay b The decay curve has essentially non-exponential form with a plateau or secondary maxima; τ value is absent or roughly approximate several lines display essentially non-exponential behavior including some "plateaux" or even secondary maxima at 35-50 µs after the laser shot. Their decay time, T , values are therefore estimated in Table 3 in a rough approximation; it is seen from this table that for essentially non-exponential decays the uncertainity ∆T is of the same order of magnitude as T itself.…”