Chemical dependence of second-order radiative contributions in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>K</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math>x-ray spectra of vanadium and its compounds

Fazinić, Stjepko; Jakšić, Milko; Mandić, Luka; Dobrinić, Julijan

doi:10.1103/physreva.74.062501

Cited by 28 publications

(9 citation statements)

References 71 publications

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“…Profiles of chemical energy shifts of the V Kβ spectrum of compounds of vanadium compared with that of pure vanadium have also been conducted using more sensitive instruments [23,24]. Those works are focused on changes in peak separation, perhaps with uniform instrumental broadening, and thus do not attempt to report the detailed line shape on an absolute energy scale.…”

Section: Spectralmentioning

confidence: 99%

Characterization of theKβspectral profile for vanadium

Smale¹,

Chantler²,

Kinnane³

et al. 2013

Phys. Rev. A

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Characteristic radiation is used extensively in most high-accuracy x-ray experiments as a standard for calibration, both in laboratory physics and in astrophysics. Kα and Kβ radiations have complex asymmetric structure in their spectral profiles, especially for transition metals. Instrumental broadening in x-ray experiments shifts peak energies by small but significant amounts, especially for critical investigations. The spectral profiles must include an account of instrumental broadening so as to be able to transfer the calibration between experiments. We present a transferable characterization of the vanadium Kβ spectral profile, using high-accuracy laboratory experiments. The peak energy of vanadium Kβ 1 is then found to be 5426.962 ± 0.015 eV. This result decreases the uncertainty by a factor of 4.7 compared with Bearden and Burr [Rev. Mod. Phys. 39, 125 (1967)]. Characterization of the profile also permits an accurate and transferable standard and methodology. In the Supplemental Material we present the full profile with uncertainties for use in further analysis using the methodology presented.

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Section: Spectralmentioning

confidence: 99%

Characterization of theKβspectral profile for vanadium

Smale¹,

Chantler²,

Kinnane³

et al. 2013

Phys. Rev. A

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“…[1][2][3][4][5] For 3d transition metals, K X-ray emission spectroscopy spectra provide information on the electronic structure of the samples as well as on their oxidation state and spin state. The solid and chemical effects on the K 1,3 diagram and the K 2,5 VtC transitions are well known, and numerous measurements of the K X-ray emission spectra of 3d transition metals and their chemical compounds have been performed using photons from X-ray tubes [6,7] and synchrotron radiation, [1,3,5,8] electrons, [9] and protons [10][11][12] for the targets excitation. In these experiments, the energy shifts, intensity ratios, relative positions, and widths of the K transitions were investigated.…”

Section: Introductionmentioning

confidence: 99%

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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“…During the last decade at the RuCer Bošković Institute (IRB) Accelerator Facility we studied chemical effects on the Kb X-ray spectra of 3d transition metals and their compounds. [9][10][11][12] For these studies we used 2 or 3 MeV broad proton beams collimated to 5 Â 1 mm size from the accelerator as an excitation source and a WD X-ray detection system based on a at LiF(110) crystal and a PSPC X-ray detector. Due to low efficiency, typical experiments required ion beam currents higher than 100 nA on targets.…”

Section: Introductionmentioning

confidence: 99%