Energy dependence of the electron shakeup and shakeoff: Evidence of different levels of nonseparability

Ватаи, Э.

doi:10.1103/physreva.38.3777

Cited by 24 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fig. 11 compares the measured yield evolution curves of Cu and V with the Thomas model (Thomas, 1984;Vatai, 1988), discussed above. The model obviously does not describe well the intensity variation.…”

Section: Article In Pressmentioning

confidence: 97%

See 1 more Smart Citation

The evolution of inner-shell multielectronic X-ray spectra from threshold to saturation for low- to high-Z atoms

Diamant

Huotari

Hämäläinen

et al. 2006

Radiation Physics and Chemistry

View full text Add to dashboard Cite

Section: Article In Pressmentioning

confidence: 97%

“…The Thomas model (Thomas, 1984;Vatai, 1988) for the SO probability near threshold, based on the timedependent perturbation theory, predicts that R increases monotonically near threshold as…”

Section: [3d] à1 Spectator Transitionsmentioning

confidence: 99%

The evolution of inner-shell multielectronic X-ray spectra from threshold to saturation for low- to high-Z atoms

Diamant

Huotari

Hämäläinen

et al. 2006

Radiation Physics and Chemistry

View full text Add to dashboard Cite

“…Shake theory predicts, however, a considerable variation of the excitation cross section from threshold up, since complete adiabatic relaxation implies no shakeup ͓9͔, while in the sudden limit shakeup satellites carry considerable intensity. A prominent theoretical approach to the calculation of the cross-section energy dependence in the adiabatic regime and its crossover to the sudden limit, pioneered by Thomas ͓4,[9][10][11], employs timedependent perturbation theory to describe the relaxation of the atom and its interaction with the slow moving photoelectron. The theory had some success in describing the cross section variation with excitation energy, and, in particular, its fast saturation close to the threshold in the very few thenavailable measurements on Ne and N 2 , and in several later studies ͓12͔.…”

Section: Introductionmentioning

confidence: 99%

Evolution of the CuKα3,4satellites from threshold to saturation

et al. 1998

View full text Add to dashboard Cite

Photoexcited Cu K␣ 3,4 satellite spectra were measured as a function of excitation energy, from threshold at ϳ10.010 keV to saturation at ϳ11 keV. A two-regime behavior is found, where in the near-threshold regime ͑TR͒ both the shape and the intensity of the spectrum vary. In the higher-energy regime ͑GR͒ only the intensity varies but not the shape. The GR spectra are well described by relativistic Dirac-Fock calculations. The analytic Thomas model, applicable in this adiabatic regime, does not agree well with the measured intensity variation with excitation energy. The continuous intensity rise from zero at threshold confirms the shake theory prediction of a pure shake-off process for inner-shell, medium-Z atom satellites. The thresholds for the individual spectral features, the overall shape variation, and the variations of the individual lines in the TR regime are determined, and discussed.

show abstract

“…With recent advent of third generation synchrotron radiation facilities, it is easy to use energy-tuned photon beams and experimental studies on the multi-electron transition process near threshold have received special interest. There have been developed three models for the electron transition probability in the adiabatic energy region (Thomas, 1984;Vatai, 1988;Roy et al, 2001). All these models contain parameters to be determined by fitting to the experimental data.…”

Section: Introductionmentioning

confidence: 99%