Intermediate coupling effect on the distribution of intensities in the KLM group of Auger transitions

Babenkov, M.I.; Zhdanov, V. S.; Starodubov, S A

doi:10.1088/0022-3700/19/17/003

Cited by 5 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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.…”

Section: Transition Intensitiesmentioning

confidence: 99%

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

Inoyatov¹,

Kovalı́k²,

Perevoshchikov³

et al. 2017

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

View full text Add to dashboard Cite

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.

show abstract

Section: Transition Intensitiesmentioning

confidence: 99%

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

Inoyatov¹,

Kovalı́k²,

Perevoshchikov³

et al. 2017

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

View full text Add to dashboard Cite

show abstract

“…Main characteristics of its improved variant are as follows: Radius of equilibrium orbit ρ • = 120 mm; instrumental energy resolution 0.4% at solid angle 0.6% of 4π steradian; electron source (sample) dimensions 0.7 × 15 mm 2 . The spectrometer is equipped with a non-equipotential multi-strip electron source 3 of Bergkvist' type [8] similar to [9] and a position-sensitive detector 4 on the basis of microchannel plate chevron [10]. Total area of the multi-strip electron source (a sample) achieves 150 mm 2 .…”

Section: Improvements In Depth Selective Electron Mössbauer Spectroscopymentioning

confidence: 99%

Improvements in Depth Selective Electron Mössbauer Spectroscopy

et al. 2006

View full text Add to dashboard Cite

The conditions for achievement of high resolving power of depth selective conversion electron Mössbauer spectroscopy method at a combined installation 'electron spectrometer-nuclear gamma-resonance spectrometer' have been obtained. There has been made a considerable step in development of the method at its realization at a magnetic sector electron spectrometer with double focusing, equipped with electron source (a sample under investigation) of large-area and position-sensitive detector. The paper presents a prospective symmetrical version of a magnetic sector electron spectrometer that allows realizing more completely possibilities of the method. It is noted that the proposed method is particularly valuable for investigations of nanosystems, nanostrutures that contain Mössbauer nuclei.

show abstract