Photoionization of Kr near the 4s threshold. I. Experiment and LS coupling theory

Schmoranzer, H.; Ehresmann, A.; Vollweiler, F.; Sukhorukov, V. L.; Lagutin, B. M.; Petrov, I. D.; Schartner, K.‐H.; Möbus, B.

doi:10.1088/0953-4075/26/17/014

Cited by 44 publications

(75 citation statements)

References 32 publications

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“…We use the configuration interaction Pauli Fock (CIPF) method, developed in previous work [2,[16][17][18][19][20]. In order to account for core polarization effects we use an approach described in a recent paper and there applied to photoionization of ground state alkali atoms [4].…”

Section: Introductionmentioning

confidence: 99%

Near threshold photoionization of excited alkali atoms Ak(np) (Ak = Na, K, Rb, Cs; n = 3-6)

Petrov

Sukhorukov

Leber

et al. 2000

The European Physical Journal D

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The effect of the polarization of the atomic core by the outer electron on near threshold photoionization of excited alkali atoms Ak(np) (Ak = Na-Cs; n = 3−6) is investigated. Partial and total cross-sections for photo-ionization of the np-electron were computed utilizing the configuration interaction technique with Pauli-Fock atomic orbitals (CIPF) and including the long range core polarization potential (CP). To calculate the core polarization potential the variational principle is applied. Comparison with previous theoretical results and with available experimental data is made for the total cross-section σ, for the electron angular distribution parameter β, for the ratio ν = |D d /Ds| of the reduced electric dipole matrix elements and for the phase shift difference ∆ = δ d − δs, associated with the d-wave and s-wave continua, respectively. In the comparison, new experimental results for σ, ν, and ∆, measured for laser-excited, polarized 39 K(4p 3/2 ) atoms, have been included.PACS. 32.80.Fb Photoionization of atoms and ions -33.60.-q Photoelectron spectra -31.50.+w Excited states

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Section: Introductionmentioning

confidence: 99%

Near threshold photoionization of excited alkali atoms Ak(np) (Ak = Na, K, Rb, Cs; n = 3-6)

Petrov

Sukhorukov

Leber

et al. 2000

The European Physical Journal D

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“…The quantum numbers n, n 0 , l, and l 0 of the latter configuration have not yet been identified in the literature. The angular momenta (l; l 0 ) are most likely of the type (s; p) or (p; d) and the principal quantum numbers ðn; n 0 Þ ¼ ð5; 5Þ or (5, 6) [9,10,12]. The wave packet dynamics after excitation by the xuv pulse is probed by the absorption of a photon from a delayed ultrashort infrared (ir) laser pulse.…”

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confidence: 99%

Real-Time Observation of Interference between Atomic One-Electron and Two-Electron Excitations

et al. 2012

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We present results of real-time tracking of atomic two-electron dynamics in an autoionizing transient wave packet in krypton. A coherent superposition of two Fano resonances is excited with a femtosecond extreme-ultraviolet pulse. The evolution of the corresponding wave packet is subsequently probed with a delayed infrared pulse. In our specific case, we get access to the interference between one- and two-electron excitation channels in the launched wave packet, which is superimposed on its decay through autoionization. A simple model is able to account for the observed dynamical evolution of this wave packet.

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“…where as in [18,19] we apply the Pauli-Fock (PF) approximation for the calculation of the single-configuration energy, E PF (K), and second-order perturbation theory for the calculation of the correlation energy, E C (K), [18,19,[26][27][28]:…”

Section: Derivation Of Equationsmentioning

confidence: 99%

Integral limit theorems for sums of additive functions with shifted arguments

Timofeev¹

1995

Izv. Math.

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The effect of the polarization of the atomic core by the outer electron on near-threshold photo-ionization of alkali atoms (Na-Cs) and metastable rare gas atoms (Ne * -Xe * ) is investigated. The variational principle is applied to compute the core polarization potential and thereby obtain dipole polarizabilities of the alkali and rare gas ions. The calculated potential is considerably deeper inside the atomic core than the previously used core polarization potentials. Inclusion of the core polarization potential leads to a better agreement of calculated near-threshold photo-ionization cross sections with experimental data in the threshold region, especially for the alkali atoms. 0953-4075/99/040973+14$19.50

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Photoionization of Kr near the 4s threshold. I. Experiment and LS coupling theory

Cited by 44 publications

References 32 publications

Near threshold photoionization of excited alkali atoms Ak(np) (Ak = Na, K, Rb, Cs; n = 3-6)

Near threshold photoionization of excited alkali atoms Ak(np) (Ak = Na, K, Rb, Cs; n = 3-6)

Real-Time Observation of Interference between Atomic One-Electron and Two-Electron Excitations

Integral limit theorems for sums of additive functions with shifted arguments

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