Scaling laws in double photoionization

Kornberg, M. A.; Miraglia, J. E.

doi:10.1103/physreva.49.5120

Cited by 64 publications

(65 citation statements)

References 32 publications

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“…Since then, the problem has been treated by model calculations [38,39], variationally [40], R-matrix methods [41], convergent close-coupling [42], time dependent close-coupling [43], and most recently by wavepacket propagation [44]. The application of these various methods have yielded absolute total cross sections for DPI of H − as well as ratios of single ionization to double ioniza-tion.…”

Section: Introductionmentioning

confidence: 99%

Single and triple differential cross sections for double photoionization ofH−

et al. 2007

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The hydride anion H − would not be bound in the absence of electron correlation. Electron correlation drives the double photoionization process and, thus should impact double photoionization results most strongly for H − . We present fully differential cross sections for the three-body breakup of H − by single photon absorption. The absolute triple-differential and single-differential cross sections were yielded by ab initio calculations making use of exterior complex scaling within a discrete variable representation partial wave basis. Results calculated at photon energies of 18eV and 30eV are compared with reported cross sections for helium calculated at 20eV above the double ionization threshold. These comparisons show a clear signature of initial state correlation that differentiate the He and H − cases.

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Section: Introductionmentioning

confidence: 99%

Single and triple differential cross sections for double photoionization ofH−

et al. 2007

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“…The picture that emerges is that R increases from threshold to a maximum, then falls off slowly to an asymptotic ratio determined by the GSC and SO terms. This general picture is supported by Z-scaling calculations of double K-shell photoionization of two-electron systems [7].…”

Section: Introductionmentioning

confidence: 59%

“…Good agreement is obtained between theory and the high-energy measurement (5.4-9.1 keV) on He using the ion-recoil momentum imaging method to distinguish photoabsorption from Compton scattering [10]. The experiments on higher-Z atoms described here and in other publications [1,11,12,13] were measured using photon energies close to the expected maxima of R [7]. Calculations that treat energy-dependent correlation interactions for this ratio are lacking for atoms other than He.…”

Section: Introductionmentioning

confidence: 73%

“…Except for the high-energy measurement on He [10], the measured ratios are significantly higher than the asymptotic limit, as expected. With the exception of [10], the measurements were made at photon energies within the broad maximum of R predicted by Z-scaling calculations [7]. The solid line through the measurements is a power-law fit with the form 1 Z 1 61 [13].…”

Section: Mo[kk] At 50 Kevmentioning

confidence: 99%

“…The results of those calculations provide reference values for experiments that measure R of many-electron targets under the assumption that interaction with outer-shell electrons is negligible. However, scaling shows a Z 2 dependence on the energy required to reach the asymptotic region [7] and may be difficult to achieve for higher-Z atoms. Good agreement is obtained between theory and the high-energy measurement (5.4-9.1 keV) on He using the ion-recoil momentum imaging method to distinguish photoabsorption from Compton scattering [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Double K-Vacancy Production by X-Ray Photoionization

Southworth¹,

Dunford²,

Kanter³

et al. 2003

AIP Conference Proceedings

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Abstract.We have studied double K-shell photoionization of Ne and Mo (Z = 10 and 42) at the Advanced Photon Source. Double K-vacancy production in Ne was observed by recording the KK-KLL Auger hypersatellite spectrum. Comparison is made with calculations using the multiconfiguration Dirac-Fock method. For Mo, double K-vacancy production was observed by recording the Kα β fluorescence hypersatellite and satellite x rays in coincidence. From the intensities of the Auger or x-ray hypersatellites relative to diagram lines, the probabilities for double K-vacancy production relative to single K-vacancies were determined. These results, along with reported measurements on other atoms, are compared with Z-scaling calculations of the high-energy limits of the doubleto-single K-shell photoionization ratio.

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Multielectron Processes Induced by Charged Particles

Shevelko

Tawara

1998

Atomic Multielectron Processes

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Scaling laws in double photoionization

Cited by 64 publications

References 32 publications

Single and triple differential cross sections for double photoionization ofH−

Single and triple differential cross sections for double photoionization ofH−

Double K-Vacancy Production by X-Ray Photoionization

Multielectron Processes Induced by Charged Particles

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