Effects of radial relaxation and intershell correlations during resonance inelastic photon scattering by an atom
Abstract
The absolute value and shape of the double differential cross section of the resonance inelastic scattering of a linearly polarized photon in the ionization threshold energy range of the subvalence s shell of the free neon or argon atom are calculated in the nonrelativistic approximation for oneelectron wavefunctions and in the dipole approximation for the anomalously dispersive scattering probability amplitude. The effects of radial relaxation, intershell correlations, bremsstrahlung, spinorbit splitting, and a finite decay width of s vacancies are taken into account. The effects of radial relaxation and intershell correlations substantially affect the nearthreshold scattering intensity: they decrease the contribution of the leading Compton anomalously dispersive component of the total cross section calculated in the oneelectron approximation by several times. The calculation results have a predictive character.
 Authors:
 Rostov State University of Transport Communications (Russian Federation)
 Publication Date:
 OSTI Identifier:
 21072538
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 104; Journal Issue: 2; Other Information: DOI: 10.1134/S1063776107020021; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; APPROXIMATIONS; ARGON; ATOMS; BREMSSTRAHLUNG; DIFFERENTIAL CROSS SECTIONS; DIPOLES; ELECTRONS; INELASTIC SCATTERING; IONIZATION; NEON; PHOTONS; PROBABILITY; RELAXATION; RESONANCE; SPIN; THRESHOLD ENERGY; TOTAL CROSS SECTIONS; VACANCIES; WAVE FUNCTIONS
Citation Formats
Khoperskii, A. N., Email: hopersky_vm_1@rgups.ru, Nadolinskii, A. M., Yavna, V. A., and Kasprzhitskii, A. S. Effects of radial relaxation and intershell correlations during resonance inelastic photon scattering by an atom. United States: N. p., 2007.
Web. doi:10.1134/S1063776107020021.
Khoperskii, A. N., Email: hopersky_vm_1@rgups.ru, Nadolinskii, A. M., Yavna, V. A., & Kasprzhitskii, A. S. Effects of radial relaxation and intershell correlations during resonance inelastic photon scattering by an atom. United States. doi:10.1134/S1063776107020021.
Khoperskii, A. N., Email: hopersky_vm_1@rgups.ru, Nadolinskii, A. M., Yavna, V. A., and Kasprzhitskii, A. S. Sun .
"Effects of radial relaxation and intershell correlations during resonance inelastic photon scattering by an atom". United States.
doi:10.1134/S1063776107020021.
@article{osti_21072538,
title = {Effects of radial relaxation and intershell correlations during resonance inelastic photon scattering by an atom},
author = {Khoperskii, A. N., Email: hopersky_vm_1@rgups.ru and Nadolinskii, A. M. and Yavna, V. A. and Kasprzhitskii, A. S.},
abstractNote = {The absolute value and shape of the double differential cross section of the resonance inelastic scattering of a linearly polarized photon in the ionization threshold energy range of the subvalence s shell of the free neon or argon atom are calculated in the nonrelativistic approximation for oneelectron wavefunctions and in the dipole approximation for the anomalously dispersive scattering probability amplitude. The effects of radial relaxation, intershell correlations, bremsstrahlung, spinorbit splitting, and a finite decay width of s vacancies are taken into account. The effects of radial relaxation and intershell correlations substantially affect the nearthreshold scattering intensity: they decrease the contribution of the leading Compton anomalously dispersive component of the total cross section calculated in the oneelectron approximation by several times. The calculation results have a predictive character.},
doi = {10.1134/S1063776107020021},
journal = {Journal of Experimental and Theoretical Physics},
number = 2,
volume = 104,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}

The role of the intershell correlation effect is theoretically investigated using the example of the Ne atom in nonresonance Compton highenergy xray photon scattering by a free atom. The calculation results qualitatively reproduce the same results in the formalism of the generalized oscillator strength and the random phase approximation with exchange for the Compton photon and electron scattering by an atom; when the incident photon energy is 11 keV and the scattering angle is 90 deg., they correspond well with the results of the synchrotron experiment presented in the work by Jung et al. [Phys. Rev. Lett. 81, 1596 (1998)].

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