K-MM radiative Auger effect in solid Ca, Ti and Cr targets after ionization with 0.7–1.5 MeV protons

Budnar, M.; Mühleisen, A.; Hribar, M.; Janžekovič, H.; Ravnikar, M.; Šmit, Ž.; Žitnik, M.

doi:10.1016/0168-583x(92)95208-9

Cited by 35 publications

(34 citation statements)

References 7 publications

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“…This is the radiative Auger effect. [1][2][3][4][5][6][7][8][9] The shake process is a monopole transition process, that is to say, the 3p electron is excited into an np discrete level or an εp continuum level. Radiative Auger spectra are weak X-ray emission spectra near the characteristic X-ray lines.…”

Section: Introductionmentioning

confidence: 99%

Radiative Auger Effect and Extended X-Ray Emission Fine Structure (EXEFS)

Kawai

2005

ANAL. SCI.

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Section: Introductionmentioning

confidence: 99%

Radiative Auger Effect and Extended X-Ray Emission Fine Structure (EXEFS)

Kawai

2005

ANAL. SCI.

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“…As in this case the photon beam energy is higher than the KL double ionization threshold, this can be due to the additional broadening resulting from multi-ionization processes. Furthermore, since both excitation energies are lower than the double K ionization threshold which amounts to 8003 eV for Ca [38], the spectra are free from the Kα h 1,2 hypersatellite lines appearing in the proton-induced spectra [24] at the energy of -173.5(6) eV. On the other hand, according to [40], for Ca the contributions from the x-ray resonant Raman scattering and RER transitions can be assumed to be negligibly small in comparison with the RA intensity.…”

Section: A Kmm Ra Shapementioning

confidence: 99%

“…The theoretical energies calculated using the DV-Xα [10] and radiative field [12] models as well as the values deduced from the Auger transition energies [24] are also listed for comparison.…”

Section: B Relative Ra Yieldmentioning

confidence: 99%

“…The energies of the corresponding transitions calculated with the DV-Xα for solid [10] and radiative field methods for atomic Ca [12] are given in the 3rd and 4th column, respectively. Finally, the RA edge energies derived in [24] from the LMM Auger transition energies reported by Larkins [47] are also listed (5th column).…”

Section: A Kmm Ra Shapementioning

confidence: 99%

“…To date, experiments based on photoexcitation employing x-ray tubes [21][22][23] or charged particle excitation [24,25] have been carried out. In these studies the contribution of the multiple ionization to the x-ray yield observed within the RA spectral region could not be excluded.…”

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High-resolutionKMMradiative Auger x-ray emission spectra of calcium induced by synchrotron radiation

et al. 2011

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The KM M radiative Auger (RA) x-ray spectra of solid Ca were induced by monochromatic synchrotron radiation and measured with a high-resolution von Hamos bent crystal spectrometer.Two excitation energies were employed, one in the near K threshold region and the second well above the K absorption edge. The KM M RA spectral structure and relative intensity with respect to the diagram Kβ 1,3 (K − M 3,2 ) line are found to be independent of the excitation energy. The overall RA structure resembles the density of unoccupied s-, p-and d-states. Due to solid state effects, however, spectral features resulting from the major discrete shake-up transitions could not be resolved. For the total KM M RA to Kβ 1,3 yield ratio, a value of 0.053(3) is obtained. The latter is compared to theoretical predictions and available experimental data obtained by various types of target excitation.

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Chemical Effects in Hard X‐ray Photon‐In Photon‐Out Spectra

Hayashi

2000

Encyclopedia of Analytical Chemistry

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Hard X‐ray photon‐in photon‐out techniques are targeted at applications where the sample environment cannot be freely chosen. The resultant X‐ray emission spectra are influenced by the chemical environments of the atoms involved. If high‐resolution measurements are possible, the chemical effects in the X‐ray emission spectra can provide information about the chemical states, complementary to that offered by other X‐ray spectroscopies. X‐ray emission is classified into six categories for convenience: X‐ray diagram lines, X‐ray valence‐band emission, radiative Auger effect, resonant X‐ray emission, Compton scattering, and X‐ray Raman scattering. After a brief description of the history of research on these types of emission, the chemical effects that they reveal and related topics, including high‐resolution absorption measurements and the static structure factor, are reviewed. An overview of the instrumentation employed in both laboratories and synchrotron radiation (SR) facilities is also given.

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K-MM radiative Auger effect in solid Ca, Ti and Cr targets after ionization with 0.7–1.5 MeV protons

Cited by 35 publications

References 7 publications

Radiative Auger Effect and Extended X-Ray Emission Fine Structure (EXEFS)

Radiative Auger Effect and Extended X-Ray Emission Fine Structure (EXEFS)

High-resolutionKMMradiative Auger x-ray emission spectra of calcium induced by synchrotron radiation

Chemical Effects in Hard X‐ray Photon‐In Photon‐Out Spectra

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