Inner-shell photoionization of group-II<i>B</i>atoms

Kutzner, Mickey; Tidwell, Charles H.; Vance, S. E.; Radojević, V.

doi:10.1103/physreva.49.300

Cited by 15 publications

(15 citation statements)

References 37 publications

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“…Subsequent work on photoionization of Cd in the ultraviolet (UV) spectral region focused on the 4d ionization cross section [7] and the effect of autoionization on 5s and 4d photoemission [8,9]. The x-ray-excited inner-shell photoelectron (XPS) and Auger spectra of Cd involving a 4p hole were found to be very unusual [10,11], as were the XPS and x-ray emission spectra (XES) of other elements around Z = 50 [10,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Double ionization of atomic cadmium

et al. 2011

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We have recorded the double photoionization spectrum of atomic Cd at four different photon energies in the range 40-200 eV. The main channel is single ionization and subsequent decay of excited Cd + states, some involving Coster-Kronig processes, whereas direct double ionization is found to be weak. The decay of the excited Cd + states shows a strong selectivity, related to the configuration of the final state. Double ionization leading to the Cd 2+ ground state is investigated in some detail and is found to proceed mainly through ionization and decay of 4d correlation satellites. The most prominent autoionization peaks have been identified with the aid of quantum-mechanical calculations.

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Section: Introductionmentioning

confidence: 99%

Double ionization of atomic cadmium

et al. 2011

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“…(This normalization of the radial orbitals agrees with that used by Cowan [20].) Using now (17) in (t5) we obtain the expansion for If> in the form, …”

Section: Representation Of Atomic Statesmentioning

confidence: 68%

Two-photon ionization of an inner shell electron of the Cl atom

Abdallah

Collins

Csanak

et al. 1995

Z Phys D - Atoms, Molecules and Clusters

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Abstract.We have calculated, using second order perturbation theory, the two photon ionization cross section of a K-shell electron of chlorine for E = 1.6 keV incident photons. Two classes of intermediate states must be considered, those in which a ls electron moves to an empty p-orbital, and those in which an electron from an occupied p-orbital moves into the continuum. The first class of intermediate states is followed by the ejection of a pelectron into the continuum. The second class of intermediate states is followed by the transfer of a ls electron into an empty p-state. The largest contribution comes from 3p --, d-continuum followed by ls ~ 3p transition.Our result is ~(2)/I = 2.06 × 1041 cm4/W where o -(2) is the two photon ionization cross-section and I is the light intensity.

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“…Previous studies employing the relativistic random-phase approximation modified to include relaxation effects (RRPAR) of the alkaline-earth-metal atoms group-IIA atoms [1], group-IIB atoms [2], and Yb (Z =70) [3], have investigated the effects of relaxation in many closed-shell systems. Photoionization cross sections from nd subshells (especially the 4d subshells) were shown to be significantly infiuenced by the relaxation effects, and the 4f cross section of mercury was brought into good agreement with experiment when relaxation effects were included [2]. Paladium (Z =46) is the only atom with a valence 4d…”

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confidence: 99%

“…[1 --, 'P""(co)P2(cos(e))], (2) where m is the photon energy and 0 is the angle measured between the directions of the incident photon and the photoelectron.…”

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confidence: 99%

“…Also, the inclusion of relaxation effects in the RRPAR potential leads to differences in calculations performed in the two gauges. In this paper, the geometric means of length and velocity cross sections are [2], negative iodine (Z =53} [14], xenon (Z=54) [15], cesium (Z =55} [16], barium (Z =56) [11], and lanthanum [17] have shown that relaxation and polarization are important many-body effects in photoionization from the 4d subshell in those systems. Since palladium is the only element with an outer 4d subshell, it is of interest to see what correlation effects are important there.…”

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confidence: 99%

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Photoionization of palladium including relaxation effects

Kutzner

Vance

1994

Phys. Rev. A

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Total and partial photoionization cross sections, branching ratios, and angular-distribution asymmetry parameters for the 4d, 4p, 4s, and 3d subshells of palladium have been calculated using the relativistic random-phase approximation and the relativistic random-phase approximation modified to include relaxation effects. Comparisons are made between results that include relaxation effects and those that do not. Minor relaxation effects are noted for the 4d and 3d photoionization parameters. However, substantial relaxation effects are noted for both the 4p and 4s subshells. Large relaxation effects are observed in the 4p partial cross section and branching ratio. Also observed is the appearance of a Cooper minimum in the 4s photoionization cross section and a corresponding change in the 4s angulardistribution asymmetry parameter.PACS number(s): 32.80.Fb, 32.80.Hd

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Inner-shell photoionization of group-IIBatoms

Cited by 15 publications

References 37 publications

Double ionization of atomic cadmium

Double ionization of atomic cadmium

Two-photon ionization of an inner shell electron of the Cl atom

Photoionization of palladium including relaxation effects

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