Bound triply excited states in neutral lithium

Mannervik, S.; Short, R.T.; Sonnek, D; Möller, G.; Lodwig, V.; Heckmann, P. H.; Blanke, J H; Brand, K. D.

doi:10.1103/physreva.39.3964

Cited by 34 publications

(21 citation statements)

References 18 publications

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“…New experimental results are also reported by Azuma et al [5] and by Kiernan et al. [6].Triply excited lithium has also been seen in the electron excitation experiment by Miiller et al [7].In addition to the autoionizing systems, a triply excited bound state, 2p2p2p 5, of lithium has been observed by Agentoft, Andersen, and Chung [8].Mannervik et al [9] measured the lifetime of this state, which is in excellent agreement with the prediction in Agentoft et al…”

Section: Introductionsupporting

confidence: 67%

Energies and lifetimes of triply excited states of lithium

Chung

Gou

1995

Phys. Rev. A

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Nine triply excited states of lithium are calculated with the saddle-point and saddle-point complex-rotation methods. Relativistic corrections are computed with first-order perturbation theory. The widths are studied with one open channel at a time as well as fully coupled open channels. Some coupled calculations include up to ten open channels. Radiative decays of the triply excited states are also computed. The predicted Auger branching ratios are in excellent agreement with experiment. An identification is found for a weak line in the observed Auger spectra. Our predicted 2s2s2p P width is substantially smaller than the experiment of Kiernan et al. [Phys. Rev. Lett. 72, 2359 (1994)] but it agrees much better with the recent experiment of Kiernan et al. [J.

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Section: Introductionsupporting

confidence: 67%

Energies and lifetimes of triply excited states of lithium

Chung

Gou

1995

Phys. Rev. A

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“…The first observation of the triply excited bound state of Li, ð2p2p2pÞ 4 S 0 ; was reported in an optical emission experiment in 1984 (Agentoft et al, 1984). The lifetime of this state is measured 5 years later (Mannervik et al, 1989) and it agrees with the prediction in Agentoft et al (1984). Interestingly, none of these work show the presence of the lowest triply excited resonance 2s2s2p 2 P 0 : Although M .…”

Section: Triply Excited Three-electron Systemsmentioning

confidence: 75%

“…Also included in this table are the recent experiment of Kiernan et al (1996) using synchrotron radiation as well as the computation results from the R-matrix calculation of Vo Ky et al (1998a). The only experimental data available on the width for the 2 P 0 resonances are that of ½1sð2s2pÞ 3 P 2 P 0 by Mannervik and Cederquist (1985) (2.6(1) meV) and Pedrotti (1987) (3.2(6) meV). The Mannervik and Cederquist (1985) with energy 58:907 eV and width 2.6(1) meV.…”

Section: Saddle-point Methodsmentioning

confidence: 97%

“…The only experimental data available on the width for the 2 P 0 resonances are that of ½1sð2s2pÞ 3 P 2 P 0 by Mannervik and Cederquist (1985) (2.6(1) meV) and Pedrotti (1987) (3.2(6) meV). The Mannervik and Cederquist (1985) with energy 58:907 eV and width 2.6(1) meV. The quoted uncertainty in Kiernan et al (1996) 710 meV; that of Cant " u et al (1977) is 73 meV: experimental width 2.6(1) meV is smaller than the 3:3 meV predicted in Chung (1997a).…”

Section: Saddle-point Methodsmentioning

confidence: 99%

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Resonances in atomic photoionization

Chung

2004

Radiation Physics and Chemistry

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“…In atoms and molecules there is a class of short-lived resonances, the so-called superexcited states with excitation energies above the first ionization threshold and spectral widths in the meV range [8][9][10][11][12][13][14]. These correlated, doubly excited electronic states are coupled to the continuum, and accurate description of resonance excitation and decay dynamics requires state-of-the-art modeling.…”

mentioning

confidence: 99%