<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>K</mml:mi><mml:mi>h</mml:mi></mml:msup><mml:msub><mml:mi>α</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>hypersatellites of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>3</mml:mn><mml:mi>d</mml:mi></mml:mrow></mml:math>transition metals and their photoexcitation energy dependence

Diamant, R; Huotari, Simo; Hämäläinen, K.; Sharon, R.; Kao, Chi Chang; Deutsch, Moshe

doi:10.1103/physreva.79.062511

Cited by 23 publications

(32 citation statements)

References 109 publications

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“…For Ca and Sc our data compare well within the experimental uncertainties with theory [51], but in the case of V the calculations overestimate our result. The present ratio for V, however, agrees very closely with the experimental and the relativistic MCDF-calculated values reported by Diamant et al [59]. The finite lifetime gives to an X-ray transition line a Lorentzian shape with a natural width equal to the sum of the total radiative and non-radiative widths of the initial and final states involved in a b c f e d Fig.…”

Section: Radiative Decay Of Double K-shell Hole Statessupporting

confidence: 80%

“…7. Experimental OEOP linewidths and experimental data of Diamant et al [59] as a function of Z (left y-axis). Plotted are also the values calculated with Eq.…”

Section: Tablementioning

confidence: 99%

“…The notation 1367.86(9/6) means 1367.86 ± 0.09 eV with an included statistical error from the fit of 0.06 eV. [38] 5176.6(1) [59] 5191.7(1) [59] a K˛˛h rates include the coupling of the initial and final state vacancies with the 3p electron. [59] 6.0(6) [59] 0.08(1) [59] the transition.…”

Section: Tablementioning

confidence: 99%

“…[38] 5176.6(1) [59] 5191.7(1) [59] a K˛˛h rates include the coupling of the initial and final state vacancies with the 3p electron. [59] 6.0(6) [59] 0.08(1) [59] the transition. The linewidths of the OEOP and TEOP transitions can be thus approximated by the sum of the total atomic level widths of the initial 1s −2 and final double-hole configuration states 1s −1 2p −1 and 2s −1 2p −1 , respectively:…”

Section: Tablementioning

confidence: 99%

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Photoinduced K-shell hollow atoms

Hoszowska

Dousse

2013

Journal of Electron Spectroscopy and Related Phenomena

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The mechanisms leading to the production of hollow K shell atoms via single photon impact were investigated for a variety of light elements with 12 ≤ Z ≤ 23. The double 1s vacancy states were produced by irradiating the samples with intense monoenergetic synchrotron radiation beams. The double-to-single K-shell photoionization probabilities P KK and the absolute double K-shell photoionization cross sections 2+ were determined by measuring with a high-resolution bent von Hamos crystal spectrometer the K˛h hypersatellite X-ray emission of the samples. The measurements were performed over a wide range of incoming photon energies from threshold up to energies beyond the broad maximum of the double-tosingle photoionization cross section ratios. The P KK and 2+ were determined from the relative yields of the resolved K˛h hypersatellite lines. For Mg, Al and Si, the two-electron one-photon (TEOP) K˛˛h transitions which represent an alternative but much weaker decay channel for double 1s vacancy states could be also observed, using a highly efficient flat crystal wavelength dispersive spectrometer. This observation of single photon-induced TEOP transitions has shown that the I(K˛h)/I(K˛˛h) branching ratios are very poorly reproduced by most of existing theoretical models. Besides the relative yields of the hypersatellite and TEOP transitions, the energies and natural linewidths of the K˛h and K˛˛h X-ray lines were also determined. The energies are found to be in good agreement with different theoretical predictions, whereas the linewidths are significantly underestimated by the calculations, except if non-lifetime broadening effects such as the outer-shell ionization and the open valence configuration are taken into consideration.

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Section: Radiative Decay Of Double K-shell Hole Statessupporting

confidence: 80%

“…7. Experimental OEOP linewidths and experimental data of Diamant et al [59] as a function of Z (left y-axis). Plotted are also the values calculated with Eq.…”

Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%

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Photoinduced K-shell hollow atoms

Hoszowska

Dousse

2013

Journal of Electron Spectroscopy and Related Phenomena

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“…High-resolution measurements of such spectra [1][2][3][4] give direct access to information on the natural width of the hypersatellite lines and the lifetimes of the K -shell hollow (i.e. doubly K -shell ionized) atoms.…”

Section: Introductionmentioning

confidence: 99%

Lifetimes of doublyK-shell ionized states

et al. 2011

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The present work provides a reliable interpretation of the K h α 1 /K h α 2 intensity ratios and an explanation of the lifetime values for K -shell hollow atoms based on an advanced theoretical analysis (using extensive multiconfiguration Dirac-Fock calculations with the inclusion of the transverse Breit interaction and quantum electrodynamics corrections). It was found that, as a result of closing the K h α 1 de-excitation channel in the pure LS coupling scheme, the K h α 1 /K h α 2 intensity ratio changes with the atomic number from small values (for the LS coupling limit at low Z ) to about 1.5-1.6 (for the j-j coupling limit at high Z ). However, closing the K h α 1 de-excitation channel (due to the domination of the pure LS coupling for the low-Z atoms) does not enlarge the lifetimes of hollow atoms.

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Diagram, valence‐to‐core, and hypersatellite Kβ X‐ray transitions in metallic chromium

et al. 2019

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We report on measurements of the Kβ diagram, valence‐to‐core (VtC), and hypersatellite X‐ray spectra induced in metallic Cr by photon single and double K‐shell ionization. The experiment was carried out at the Stanford Synchrotron Radiation Lightsource using the seven‐crystal Johann‐type hard X‐ray spectrometer of the beamline 6‐2. For the Kβ diagram and VtC transitions, the present study confirms the line shape features observed in previous works, whereas the Khβ hypersatellite transition was found to exhibit a complex spectral line shape and a characteristic low‐energy shoulder. The energy shift of the hypersatellite relative to the parent diagram line was deduced from the measurements and compared with the result of extensive multiconfiguration Dirac–Fock (MCDF) calculations. A very good agreement between experiment and theory was found. The MCDF calculations were also used to compute the theoretical line shape of the hypersatellite. A satisfactory agreement was obtained between the overall shapes of the experimental and theoretical spectra, but deviations were observed on the low‐ and high‐energy flanks of the hypersatellite line. The discrepancies were explained by chemical effects, which were not considered in the MCDF calculations performed for isolated atoms.

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Khα1,2hypersatellites of3dtransition metals and their photoexcitation energy dependence

Cited by 23 publications

References 109 publications

Photoinduced K-shell hollow atoms

Photoinduced K-shell hollow atoms

Lifetimes of doublyK-shell ionized states

Diagram, valence‐to‐core, and hypersatellite Kβ X‐ray transitions in metallic chromium

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