Satellite structure in the argon valence shell by electron-momentum spectroscopy

McCarthy, I. E.; Pascual, R; Storer, P.; Weigold, E.

doi:10.1103/physreva.40.3041

Cited by 46 publications

(27 citation statements)

References 27 publications

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“…The experimental energies are from Refs. [62][63][64]. FRPA explains at least 99% of the correlation energies, and all calculations, including CCSD, agree with the experiment within the uncertainty expected from basis extrapolation.…”

Section: B Ground States and Ionization Energies Of Simple Atomsmentioning

confidence: 82%

Accuracy of the Faddeev random phase approximation for light atoms

2012

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The accuracy of the Faddeev random phase approximation (FRPA) method is tested by evaluating total and ionization energies in the basis-set limit. A set of light atoms up to Ar is considered. Comparisons are made with the results of coupled-cluster singles and doubles (CCSD), with third-order algebraic diagrammatic construction [ADC (3)], and with the experiment. It is seen that even for two-electron systems, He and Be 2+ , the inclusion of RPA effects leads to satisfactory results, and therefore it does not overcorrelate the ground state. The FRPA becomes progressively better for larger atomic numbers, where it gives ≈5 mH more correlation energy, and it shifts ionization potentials by 2-10 mH with respect to the similar ADC(3) method. The ionization potentials from FRPA tend to reduce the discrepancies with the experiment.

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Section: B Ground States and Ionization Energies Of Simple Atomsmentioning

confidence: 82%

Accuracy of the Faddeev random phase approximation for light atoms

2012

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“…In the spectrum of Ar , on the contrary, the satellite peaks can be ascribed either to initial or to final (ion) state correlations. The measure of the momentum distribution, in that case, has shown to be capable of discriminating between the different origins (26). It has been pointed out that direct double ionisation experiments, using the coincidence techniques (e,3e) or (hv,2e), give a more direct insight on bound state correlations.…”

Section: Ems and Electron Correlationmentioning

confidence: 99%

The (e,2e) spectroscopy, achievements and perspectives

Stefani

Avaldi²,

Camilloni³

1993

J. Phys. IV France

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Electron-electron coincidence experiments have experienced over the past twenty years an increasingly rapid expansion and application to many different fields. Among them, the (e,2e) spectroscopy has been successfully used to investigate either the target electronic structure or the ionisation dynamics. The capability of this spectroscopy to investigate single particle properties in atoms, molecules and solids is discussed by the help of some recent results. Correlation effects in bound states and in the continuum have been the subject for several recent (e,2e) investigations. Single and double ionisation coincidence experiments are reviewed focusing the attention on correlation effects. The interference between direct and resonant ionisation channels has been also the objective of recent electron coincidence experiments. Perspective and developments of the (e,2e) spectroscopy are briefly discussed

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“…Fig. 6 shows how it works for the 3s and 3p manifolds of argon (McCarthy et al 1989) at 1500 eV, using the weak-coupling approximation (10). The noncoplanar symmetric experimental data are normalised to the calculation at one point, the peak of the 3p DWIA curve.…”

Section: Distorted-wave Theoriesmentioning

confidence: 99%

“…For molecules we do not resolve vibrational or rotational states so these are effectively degeneracies, which are summed out by closure relations (McCarthy and Weigold 1988), assuming that their degrees of freedom are independent of the electronic degrees of freedom. The structure overlap therefore is effectively the electronic structure overlap.…”

Section: (4)mentioning

confidence: 99%

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Electronic Structure of Atoms, Molecules and Solids from (e,2e) Studies

McCarthy¹

1990

Aust. J. Phys.

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The (e,2e) reaction on atoms can be described quite well in most of kinematic space by distorted-wave theories of varying sophistication. In some regions it is necessary to obey the newly-discovered boundary condition for three charged particles. The understanding enables us to recognise a kinematic region where the reaction is sensitive only to the target-ion structure. Single-particle and electron-correlation information has been discovered for a wide range of atoms and molecules. The understanding of solids is developing.

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Satellite structure in the argon valence shell by electron-momentum spectroscopy

Cited by 46 publications

References 27 publications

Accuracy of the Faddeev random phase approximation for light atoms

Accuracy of the Faddeev random phase approximation for light atoms

The (e,2e) spectroscopy, achievements and perspectives

Electronic Structure of Atoms, Molecules and Solids from (e,2e) Studies

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