The E2 admixtures in mixed forbidden lines of Bi I and Pb I

Wąsowicz, Tomasz J.

doi:10.1088/0031-8949/76/4/003

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…The techniques for numerical analysis with extraction of the hyperfine structure for the cases of both integer and halfinteger spin were discussed, for instance, in Ref. [25].…”

Section: Introductionmentioning

confidence: 99%

Atomic spectroscopy with twisted photons: Separation of M1−E2 mixed multipoles

2018

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We analyze atomic photoexcitation into the discrete states by twisted photons, or photons carrying extra orbital angular momentum along their direction of propagation. From the angular momentum and parity considerations, we are able to relate twisted-photon photoexcitation amplitudes to their plane-wave analogues, independently of the details of the atomic wave functions. We analyzed the photo-absorption cross sections of mixed-multipolarity E2 − M1 transitions in ionized atoms and found fundamental differences coming from the photon topology. Our theoretical analysis demonstrates that it is possible to extract the relative transition rates of different multipolar contributions by measuring the photo-excitation rate as a function of the atom's position (or the impact parameter) with respect to the optical vortex center. The proposed technique for separation of multipoles can be implemented if the target's atom position is resolved with sub-wavelength accuracy, for example, with Paul traps. Numerical examples are presented for Boron-like highly-charged ions (HCI).

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“…The techniques for numerical analysis with extraction of the hyperfine structure for the cases of both integer and halfinteger spin were discussed, for instance, in Ref. [25].…”

Section: Introductionmentioning

confidence: 99%

Atomic spectroscopy with twisted photons: Separation of M1−E2 mixed multipoles

2018

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“…The results of both of these experiments differ by a factor of 2. The E2 admixtures have also been obtained directly from the observation of hyperfine structure of lines of isotope 207 [10,11]. In the case of Pb II, results of the hfs analysis of the trapped 207 Pb [10] and Zeeman effect [9] also differ by a factor of 2.…”

Section: Introductionmentioning

confidence: 99%

M1–E2 interference in the Zeeman spectra of Pb I and Pb II

Werbowy¹,

Kwela²

2009

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

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Studies of the M1–E2 interference effect in the Zeeman spectra of two mixed-type forbidden lines, 733.2 nm of Pb I and 710.2 nm of Pb II, are reported. In the experiment, the odd isotope 207 of Pb was used. By the use of computer modelling techniques the simulated contours were fitted to the recorded spectra in order to determine the electric-quadrupole admixture in forbidden lines. The E2 admixtures found are (4.12 ± 0.07)% for the 733.2 nm line and (4.25 ± 0.18)% for the 710.2 nm line of Pb II. Our results are compared with recent theories and other experiments.

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