RELATIVISTIC 2S1/2 (L1) ATOMIC SUBSHELL RADIATIONLESS TRANSITION PROBABILITIES FOR Yb AND Hg

Santos, J. P.; Marques, J. P.; Parente, F.; Indelicato, P.; Desclaux, J. P.

doi:10.1006/adnd.2000.0837

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…This is, to our knowledge, the first full relativistic calculation of the M-shell transition rates and fluorescence yields of these elements or any other, for this matter. Furthermore, this work extends the previous calculations of the K-shell decay rates and fluorescence yields of the same elements [21] and the L1-subshell radiationless rates of Hg [22], both using the same approach.…”

Section: Introductionsupporting

confidence: 68%

Relativistic calculations of M-shell decay rates and yields in Zn, Cd and Hg

Sampaio

Parente

Indelicato

et al. 2013

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

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In this work, we calculate the radiative and radiationless transition probabilities of M-shell vacancies in Zn, Cd and Hg atoms using the Dirac–Fock method. The obtained transition probability values are then used to calculate the corresponding fluorescence, Auger and Coster–Kronig yields for each subshell that are compared to existing theoretical calculations. Average M-shell fluorescence yields are derived and compared with semi-empirical and experimental results.

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Section: Introductionsupporting

confidence: 68%

Relativistic calculations of M-shell decay rates and yields in Zn, Cd and Hg

Sampaio

Parente

Indelicato

et al. 2013

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

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“…In the fits the widths, positions and yield ratios of the two Voigtians were kept fixed at the values obtained from the calculations. The relative intensities of the satellite lines which are equal to the ratios of double-to-single vacancy states were estimated using the radiationless transition probabilities reported recently by Santos et al for the subshells L 1 [32] and L 2 [33], the fluorescence yields quoted in [34] and the relative intensities of the transitions…”

Section: Satellite X-ray Linesmentioning

confidence: 99%

“…In general, the latter are indeed overestimated by theory. For instance, theoretical L 1 Coster-Kronig widths of 14.5 eV, 11.2 eV and 10.7 eV are given in [65] (interpolation between the values quoted for Au and Bi), [66] and [32], respectively. The theoretical Auger widths from the same sources are 2.5 eV, 2.0 eV and 2.1 eV, i.e., 2.2 eV in average.…”

Section: Transition Widthsmentioning

confidence: 99%

Energies and widths of atomic core-levels in liquid mercury

2010

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Abstract. High-resolution measurements of the photoinduced X-ray emission of liquid mercury were performed, using a transmission DuMond-type crystal spectrometer for transitions above 11 keV and a reflection von Hamos-type crystal spectrometer for transitions below 11 keV. The target X-ray fluorescence was produced by irradiating the sample with the Bremsstrahlung from X-ray tubes. The energies and natural linewidths of 6 K-shell, 26 L-shell and 2 M -shell X-ray transitions were determined. Using a least-squaresfit method to solve the two sets of equations derived from the observed transition energies and transition widths the binding energies of the subshells K to M5 and O1 and the level widths of the subshells K to N5 and O1 could also be determined.

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“…To ensure orthogonality, no orbital relaxation was allowed between the initial and final bound state wavefunctions during the calculation of the radiationless transition rates. These were, however, calculated using the correct transition energies obtained in previous independent calculations of initial and final state wavefunctions . To keep consistency between the radiative and radiationless calculations, multiconfiguration wavefunctions beyond intermediate coupling were not employed because the approximation used for the evaluation of the radiationless transition rates cannot be used in an optimized level calculation with correlation orbitals.…”

Section: Relativistic Calculations Of Atomic Parameters Of Fe and Znmentioning

confidence: 99%

The investigation of K-shell fluorescence parameters of Zn-Fe alloys with different grain size and microstrain values

et al. 2017

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It is known that zinc alloys with iron group metals have better corrosion resistance than pure zinc. Owing to the corrosion resistance of these alloys, Zn-Fe coatings are widely used in automotive industry and have excellent mechanical performance. In this work, we investigated the relationship between the changes in the measured X-ray fluorescence parameters (K β /K α , σ Kα and σ Kβ ) and the changes in the structural parameters such as microstrain or grain size values for Zn-Fe alloys that were prepared with different pH values. To explain these changes, the K α and K β X-ray production cross sections, and the K β /K α X-ray intensity ratio values were calculated by three different ways for the elemental forms of Zn and Fe. The structural parameters, such as microstrain and grain size, were also calculated. We expect that the outer shell electronic distribution affects the structural parameters of the produced Zn-Fe alloys, changing the measured K α and K β X-ray production cross sections, and the K β /K α X-ray intensity ratio values. We also show that Zn-Fe alloy mi nimum microstrain value corresponds to the maximum changes in K β X-ray production cross-section values of Fe and Zn.

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RELATIVISTIC 2S1/2 (L1) ATOMIC SUBSHELL RADIATIONLESS TRANSITION PROBABILITIES FOR Yb AND Hg

Cited by 7 publications

References 12 publications

Relativistic calculations of M-shell decay rates and yields in Zn, Cd and Hg

Relativistic calculations of M-shell decay rates and yields in Zn, Cd and Hg

Energies and widths of atomic core-levels in liquid mercury

The investigation of K-shell fluorescence parameters of Zn-Fe alloys with different grain size and microstrain values

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