Applicability of non-relativistic K Auger transition probability calculations

Babenkov, M.I.; Petukhov, V.K.

doi:10.1088/0022-3700/10/4/002

Cited by 9 publications

(3 citation statements)

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“…A comparison between the theoretical results and the experimental data indicates that the relativistic calculations ( [2] and the present work) reproduce better the measured intensities for the KL 1 M 1 and KL 1 M 2,3 lines than the nonrelativistic ones. Contributions from the relativistic effects that are particularly pronounced [64] in the K Auger transitions leading to one or two s-vacancies (in any shell) may explain this finding. The relativistic calculations [2] based on jj-coupling are, however, unsuccessful in intensity description for the dominant fitted components (Nos.…”

Section: Transition Intensitiesmentioning

confidence: 83%

“…It is known (see, e.g., [65]) that intensities of the KL 1 M 2,3 , KL 2 M 2,3 , and KL 3 M 2,3 Auger transitions are very sensitive to the coupling of angular momenta used in the calculations. Because the calculations [2, 5, this work] differ in considering the relativistic effects, we followed a recommendation [64] and compared theoretical and experimental values for the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio in order to investigate the spin-orbit coupling effect on the rubidium KLM Auger electron spectrum. It was shown in [64] that while the KL 2,3 M 2,3 transition intensities are negligibly influenced by the relativistic effects, the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio is very sensitive to the coupling type.…”

Section: Transition Intensitiesmentioning

confidence: 99%

“…Because the calculations [2, 5, this work] differ in considering the relativistic effects, we followed a recommendation [64] and compared theoretical and experimental values for the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio in order to investigate the spin-orbit coupling effect on the rubidium KLM Auger electron spectrum. It was shown in [64] that while the KL 2,3 M 2,3 transition intensities are negligibly influenced by the relativistic effects, the KL 3 M 2,3 /KL 2 M 2,3 transition intensity ratio is very sensitive to the coupling type. As can be seen from table 2 (the last row) and figure 1 (the open circle) that the KL 3 M 2,3 /KL 2 M 2,3 intensity ratio derived from the intermediate coupling calculations [5, this work] agrees with the experimental value within 1σ while the jj-coupling prediction [2] differ from it by 17σ.…”

Section: Transition Intensitiesmentioning

confidence: 99%

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The KLM + KLN Auger electron spectrum of rubidium in different matrices

Inoyatov¹,

Kovalı́k²,

Perevoshchikov³

et al. 2017

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

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The KLM + KLN Auger electron spectrum of rubidium (Z = 37) emitted in the electron capture decay of radioactive 83 Sr in a polycrystalline platinum matrix and also 85 Sr in polycrystalline platinum and carbon matrices as well as in an evaporated layer onto a carbon backing were experimentally studied in detail for the first time using a combined electrostatic electron spectrometer. Energies, relative intensities, and natural widths of fifteen basic spectrum components were determined and compared with both theoretical predictions and experimental data for krypton (Z = 36). Relative spectrum line energies obtained from the semi-empirical calculations in intermediate coupling scheme were found to agree within 3σ with the measured values while disagreement with experiment exceeding 3σ was often observed for values obtained from our multiconfiguration Dirac-Hartree-Fock calculations. The absolute energy of the dominant spectrum component given by the semi-empirical approach agrees within 1σ with the measured value. Shifts of +(0.2 ± 0.2) and −(1.9 ± 0.2) eV were measured for the dominant KLM spectrum components between the 85 Sr sources prepared by vacuum evaporation on and implanted into the carbon foil, respectively, relative to 85 Sr implanted into the platinum foil. A value of (713 ± 2) eV was determined for the energy difference of the dominant components of the KLM + KLN Auger electron spectra of rubidium and krypton generated in the polycrystalline platinum matrix. From the detailed analysis of the measured data and available theoretical results, the general conclusion can be drawn that the proper description of the KLM + KLN Auger electron spectrum for Z around 37 should still be based on the intermediate coupling of angular momenta taking into account relativistic effects.

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Section: Transition Intensitiesmentioning

confidence: 83%