Extinction spectroscopy: A novel laser spectroscopic technique

Pedrotti, Kenneth D.

doi:10.1016/0030-4018(87)90167-2

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…For this state, there is a large difference between the theoretical predictions and the measurement of Mannervik (1982, 1985), who reported a very small experimental error (0.1 meV). The observation of Cederquist and Mannervik (2.6 ± 0.1 meV) is in agreement with the value of 3.2 ± 0.6 meV measured by Pedrotti (1987) but the large error on the latter value does not bring us any further. The present result, 3.78 meV, is in good agreement with the value reported by Davis and Chung, 3.71 meV, but is still 1.2 meV larger than the value observed by Cederquist and Mannervik and 0.5 meV larger than most other calculations.…”

Section: Autoionization Widthssupporting

confidence: 90%

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Energies and autoionization widths in the lithium iso-electronic sequence

Verbockhaven¹,

Hansen²

2001

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

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Energies and autoionization widths are presented for autoionizing states in Li I, Be II and B III lying between the 1s 2 and the 1s2s 3 S ionization limits. A configuration interaction expansion combined with a B-spline basis set has been used to compute the properties of the lowest 2 S e , 2 P o and 2 D e states which are, in the LS approximation, the only terms allowed to autoionize. The comparison with theoretical and experimental data shows the high accuracy of the present approach applied to singly core-excited states. The error on the energies is found, in the case of Li I, to be well below 10 meV in general, while for Be II and B III, for which much less is known, the present results point to the need for more accurate measurements. Several new identifications have been made and some identifications revised in the experimental data. For autoionization widths, the comparison with experimental and theoretical data shows that the monoconfigurational HF description of the 1s 2 limit employed here provides a good approximation although, for Li I, some of the differences with experimental measurements can be related to the lack of correlation in the wavefunction used to describe the limit.

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Section: Autoionization Widthssupporting

confidence: 90%

“…oNicolaides and Aspromallis (1983), MCHF + correlation approach. pPedrotti (1987), extinction spectroscopy. qWu and Xi (1991), SP method combined with R-matrix r Ziem et al (1975),.…”

mentioning

confidence: 99%

Energies and autoionization widths in the lithium iso-electronic sequence

Verbockhaven¹,

Hansen²

2001

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

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“…The CAP method was used to calculate the two lowest 2 P 0 [1s(2s2p) 3 P] and 2 P 0 [1s(2s2p) 1 P] resonances of the lithium atom and 1 S resonance of H − . For the lowest 2 P 0 [1s(2s2p) 3 P] resonance, there are experimental estimates of energy and width [51][52][53]76], for the next 2 P 0 [1s(2s2p) 1 P] resonance where only the energy is known [77,78]. The experimental results are in satisfactory agreement with the theoretical ones [54,[79][80][81][82].…”

Section: Calculation Methodssupporting

confidence: 69%

Calculation of the Lowest Resonant States of H− and Li by the Complex Absorbing Potential Method

Адамсон

Kharlampidi

Dyakov

et al. 2021

Atoms

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The analysis of the features of the method of complex absorbing potential (CAP) is carried out for a single-channel problem with an explicit parameterization of the scattering matrix. It is shown that there can be several types of CAP trajectories depending on the choice of the initial conditions. In any case, the estimation of the resonance parameters from the position of the optimal trajectory point can lead to a systematic error or an ambiguous result. In special cases, the search for the optimal point can be replaced by the averaging over a closed section of the trajectory. The CAP trajectories constructed in the H− and Li resonance calculations correlate well with the model trajectories, which have a curl around the resonance. The averaging over a closed area of the trajectory leads to better estimates of the energy and width of the resonance in comparison with the technique of searching for the optimal point.

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Resonances in atomic photoionization

Chung

2004

Radiation Physics and Chemistry

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Extinction spectroscopy: A novel laser spectroscopic technique

Cited by 9 publications

References 13 publications

Energies and autoionization widths in the lithium iso-electronic sequence

Energies and autoionization widths in the lithium iso-electronic sequence

Calculation of the Lowest Resonant States of H− and Li by the Complex Absorbing Potential Method

Resonances in atomic photoionization

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