Radiative Lifetime Measurements in Al II-VII

Abstract

We have used the beam-foil technique to study spectra of aluminium in the wavelength range 300 Å to 2000 Å, and measured radiative mean lives for 22 levels in Al II-Al VII. Where possible, our results are compared with theory and other experimental work.

Absolute transition probabilities of Al I and Al II spectral lines and intensity ratios within multiplets

“…3.5(3) Andersen et al (1971) The average experimental data are presented in Table 1. There are four experimental works in which, by use of the beam -foil method, the radiative lifetime of the singlet 3p 1 P o 1 level was measured (Kernahan et al 1979;Smith 1970;Berry et al 1970;Head et al 1976). The agreement of experimental data is within a 2% limit and the average experimental value is also presented in Table 1.…”

Spatial coherence of the optical field in multimode waveguides

“…Numbers in brackets represent powers of ten. In order to infer the accuracy of our computational method, the transition energies and the line strengths for the 3s3p 1,3 P 1 -3s 2 1 S 0 electrical dipole transitions were compared with other theoretical and experimental values [32][33][34][35][36][37][38][39][40][41][42][43] in table 1. The present transition energies are in good agreement with experimental and other theoretical values.…”

Fock-space relativistic coupled-cluster calculation of hyperfine induced $\bf {^1S_0 \rightarrow {^3P^o_0}}$ clock transition in Al$^+$

“…From experiments, to the best of our knowledge, one and three experimental results of oscillator strength for 1 S 0 − 3 P o 1 [40] and 1 S 0 − 1 P o 1 transitions [41][42][43], respectively are available in the literature, and all are from the old experiments. While [40] is using the time-resolve technique, the others [41][42][43] are using the beam-foil technique to study the atomic spectra. Our result, 2.60 × 10 −5 , for 1 S 0 − 3 P o 1 transition has the same order of magnitude as the experiment, (1.068±0.074)×10 −5 , however, larger by ≈ 128%.…”