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Title: Possibility of giant enhancement of low-frequency non-resonant Rayleigh scattering by atomic systems within dense plasmas

In this paper, we demonstrate the possibility of electron density-induced giant growth of non-resonant Rayleigh scattering of electromagnetic radiation (in the low-frequency limit) by atomic systems within dense plasmas. Non-relativistic quantum mechanical calculation is performed under electric dipole approximation, for elastic scattering of radiation by the ground states 1s of plasma-embedded hydrogen-like atomic ions treated within the framework of the ion-sphere model. The results indicate giant enhancement of the non-resonant (photon frequency Ļ‰ being much smaller than the lowest resonance frequency Ļ‰{sub 1sāˆ’2p}) Rayleigh cross-section by an order of magnitude, at (atomic system-specific) high enough plasma electron densities under present consideration. The Z{sup āˆ’8}-scaling of the non-resonant Rayleigh cross-section in free and isolated H-isoelectronic sequence of ions is shown to be broken in dense plasma environments.
Authors:
;  [1]
  1. Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah, West Bengal 711 103 (India)
Publication Date:
OSTI Identifier:
22251865
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; ATOMIC IONS; CROSS SECTIONS; ELASTIC SCATTERING; ELECTRIC DIPOLES; ELECTROMAGNETIC RADIATION; ELECTRON DENSITY; GROUND STATES; HYDROGEN; PHOTONS; PLASMA; QUANTUM MECHANICS; RAYLEIGH SCATTERING