Zeeman effect in the perturbed 6s n d 1,3 D 2 sequences of Ba-I: test of MQDT wavefunctions

Grafstrom, P; Levinson, C; Lundberg, Hans; Svanberg, Sune; Grundevik, P.; Nilsson, L.; Aymar, M

doi:10.1007/bf01412997

Cited by 37 publications

(11 citation statements)

References 16 publications

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“…The lifetimes measured in this region using a single-mode laser for much lower atomic beam densities were the same as those obtained in the higher-density measurements. The conclusion is even more supported by the fact that the multi-mode data were obtained in connection with quantum-beat measurements of Land6 factors [21], utilizing very short pulse lengths and correspondingly high atomic beam densities. The highly excited states investigated in the present work have long natural lifetimes and it is important to ensure measuring conditions where effects due to black-body radiation-induced transitions to closelying levels can be identified.…”

Section: Measurements and Resultsmentioning

confidence: 72%

“…Aymar and Robaux [4] actually interchange the singlet and triplet designations for n = 26. In view of the experimentally measured gj factors for these states [21] we have, however retained the designation of Rubbmark et al [2]. The strong perturbation in the Fig .…”

Section: Discussionmentioning

confidence: 96%

“…The optical double resonance method can be used for precision measurements. A study of the Zeeman effect in the perturbed D-sequence will be presented in a forthcoming paper [21].…”

Section: Discussionmentioning

confidence: 99%

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Natural radiative lifetimes in the perturbed 6snd 1 D 2 sequence of barium

Bhatia

Grafstrom²,

Levinson³

et al. 1981

Z Physik A

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Natural radiative lifetimes in the perturbed 6sns ~D 2 (n= 12-30) sequence of barium have been measured using the PUMOLS (PUlse-MOdulated Laser Spectroscopy) method, which incorporates pulse-modulation of a CW dye-laser beam and delayed coincidence techniques. Principal perturbers are the 5d 7d 3F 2 and ~D 2 states. Lifetimes were also measured for these shortlived valence states, which through configuration mixing cause drastic decreases in lifetime values in the region of perturbation of the 6snd 1D z sequence. Two-step laser excitation from the ground 6s 2 ~So state via the 6s 6p 1p~ state was employed. Special care was taken to determine the influence of black-body radiation transitions on the measured lifetimes.

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Section: Measurements and Resultsmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 96%

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Natural radiative lifetimes in the perturbed 6snd 1 D 2 sequence of barium

Bhatia

Grafstrom²,

Levinson³

et al. 1981

Z Physik A

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“…By fitting the theoretical level energies to the experimental data, MQDT wavefunctions revealing the interchannel interactions can be obtained, which are useful for predicting other spectroscopic properties such as natural radiative lifetimes, Landé factors and hyperfine structures. The details of the theoretical method and the relevant formulation for Landé factor calculation of perturbed Rydberg states with MQDT wavefunctions can be found in [27][28][29][30].…”

Section: Mqdt Analysesmentioning

confidence: 99%

Landé factors for even-parity 5pnp and 5pnf J = 1, 2 levels along the Rydberg series of Sn I

Xu¹,

You²,

Zhang³

et al. 2009

J. Phys. B: At. Mol. Opt. Phys.

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Landé g-factors have been measured by time-resolved laser-induced fluorescence and Zeeman quantum-beat techniques for the even-parity levels of the J = 1 5pnp (n = 11–13, 15–19) and J = 2 5pnp (n = 11–13, 15–19, 31, 32), 5pnf (n = 4, 5, 9–19, 22, 23) Rydberg series and for all the 5p7p and 5p8p perturbing levels of neutral tin. A two-colour two-step excitation scheme was used in the experiment. The experimental results have been compared with theoretical g-values obtained by the multichannel quantum defect theory and the relativistic Hartree–Fock theory, respectively. In most cases, the theoretical values agree well with the experimental data.

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“…Figure 1 shows as an example a Zeeman quantum beat signal of the laser excited 6s13d D level observed in the transition 6s13d D -6s6p P . The g ( values of the 6snd D levels are known [24]. The two sublevels J"2, M"#1; M"!1 were excited coherently from the 6s S level by the two linearly polarized laser pulses.…”

Section: Measurementsmentioning

confidence: 99%

Zeeman effect of superfluorescently populated 6snf 1F3 Ba I levels

Rinkleff

1996

Z Phys D - Atoms, Molecules and Clusters

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Zeeman quantum beats of the Ba I 6snf F levels were measured between n"10 and 19 by time resolved recording of the exponential decay of the fluorescence on the 6snf F !6s5d D transitions. The 6snf F levels were populated by superfluorescence pulses from the energetically higher lying 6s(n#3)d D levels, the D levels were excited in a resonant two step process by two pulsed dye lasers. The experimental results of the g ( values in the 6snf F sequence are in fair agreement with the prediction of multi-channel quantum-defect theory.

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Zeeman effect in the perturbed 6s n d 1,3 D 2 sequences of Ba-I: test of MQDT wavefunctions

Cited by 37 publications

References 16 publications

Natural radiative lifetimes in the perturbed 6snd 1 D 2 sequence of barium

Natural radiative lifetimes in the perturbed 6snd 1 D 2 sequence of barium

Landé factors for even-parity 5pnp and 5pnf J = 1, 2 levels along the Rydberg series of Sn I

Zeeman effect of superfluorescently populated 6snf 1F3 Ba I levels

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