Inner-shell photoionization of alkaline-earth-metal atoms

Kutzner, Mickey; Winn, D.; Mattingly, S. E.K.

doi:10.1103/physreva.48.404

Cited by 15 publications

(3 citation statements)

References 36 publications

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“…Core (1s) photoionization of beryllium has been studied both computationally [67][68][69][70][71] and experimentally [72][73][74]. We study it here using three, six, seven, and ten orbitals, again performing full configuration interaction in all calculations.…”

Section: B Core Photoionizationmentioning

confidence: 99%

Single photoionization of Be and HF using the multiconfiguration time-dependent Hartree-Fock method

2012

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A recently developed ab initio implementation of the muticonfiguration time-dependent Hartree Fock (MCTDHF) method is used to calculate valence and core photoionization cross sections of the Be atom and HF molecule in the Born-Oppenheimer approximation. The cross sections are extracted from the dynamics following excitation by a single subfemtosecond laser pulse. We compare with previously published results and those from time-independent complex Kohn scattering calculations and find that the MCTDHF method calculates both the magnitude of the cross section and the line shapes of the resonant peaks to good accuracy, particularly for valence photoionization. These calculations demonstrate a methodology immediately applicable to calculating multiphoton and ultrafast dynamics.

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Section: B Core Photoionizationmentioning

confidence: 99%

Single photoionization of Be and HF using the multiconfiguration time-dependent Hartree-Fock method

2012

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“…Connerade andMansfield (1974, 1975) and Sonntag et al (1984) have reported experimental Cs and Ba 3d absorption spectra. The Ba 3d absorption has been calculated by Kutzner et al (1993). Sonntag et al's investigation was motivated by the question of where the collapse of the 4f wavefunction would happen in the presence of the 3d hole.…”

Section: Introductionmentioning

confidence: 99%

3d photoionization of Xe, Cs and Ba and the collapse of the 4f wavefunction

Arp¹,

Iemura²,

Kutluk³

et al. 1999

J. Phys. B: At. Mol. Opt. Phys.

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Total photoion yield spectra in the vicinity of the 3d thresholds of Xe, Cs and Ba are presented. These spectra were recorded with higher photon energy resolution than previously reported. For xenon the new experimental data reveal additional structures. Employing Hartree-Fock calculations, the origin of the prominent resonances is explained: for Xe and Cs the main absorption features are caused by shape resonances above threshold, whereas for Ba it is revealed that the 4f orbital has finally collapsed and the sharp resonances are caused by discrete excitations into bound states.

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“…Recent calculations of the total cross section for the lower [17] and higher [15] photon energies are available. Other calculations concentrate on autoionization features below the doubleionization threshold [18,19] or on the K-shell region above 115 eV [20][21][22].…”

mentioning

confidence: 99%

Valence double photoionization of beryllium

Wehlitz¹,

Whitfield²

2001

J. Phys. B: At. Mol. Opt. Phys.

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We have measured the double-to-single photoionization ratio of beryllium (1s 2 2s 2 ) between 32 and 80 eV and compare our data with the electron-impact ionization cross section of Be + . In this energy region only simultaneous but not sequential emission of both 2s electrons can take place. We also compare our data with the double-to-single photoionization ratios of He, H 2 and Li and find surprisingly good agreement of the photon-energy dependence if the ratio is scaled appropriately. The double-to-single photoionization ratio is lower for Be than for He due to a weaker electron-electron interaction between the valence electrons.

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Inner-shell photoionization of alkaline-earth-metal atoms

Cited by 15 publications

References 36 publications

Single photoionization of Be and HF using the multiconfiguration time-dependent Hartree-Fock method

Single photoionization of Be and HF using the multiconfiguration time-dependent Hartree-Fock method

3d photoionization of Xe, Cs and Ba and the collapse of the 4f wavefunction

Valence double photoionization of beryllium

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