Nonresonant elastic scattering of lowenergy photons by atomic sodium confined in quantum plasmas
The nonresonant elastic scattering of lowenergy photons by the bound valence electron in the ground state 3s of atomic sodium confined in quantum plasmas is investigated theoretically. The incident photon energy is assumed to be much smaller than the 3s3p excitation energy. The alkali atom sodium is first formulated as an effective oneelectron problem in which the attractive interaction between the valence electron and the atomic ion core is simulated by a spherically symmetric model potential. The ShuklaEliasson oscillatory exponential cosine screenedCoulomb potential model is then used to mimic the effective twobody (valencecore) interaction within quantum plasmas. Nonrelativistic calculations performed within the electric dipole approximation indicate that the nonresonant elastic photon scattering crosssection undergoes a dramatic growth by several orders of magnitude as the quantum wave number increases. A qualitative explanation of this phenomenon is presented. In the absence of the oscillatory cosine screening term, a similar growth is observed at larger values of the quantum wave number. Our computed relevant atomic data are in very good agreement with the experimental as well as the previous theoretical data for the zeroscreening (free atom) case, and with the very limited, accurate theoretical results available for the case of exponential screenedCoulomb twobodymore »
 Authors:

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^{[1]}
 Department of Physics, Indian Institute of Engineering Science and Technology, Shibpur Howrah, 711 103, West Bengal (India)
 Publication Date:
 OSTI Identifier:
 22408219
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATOMS; COULOMB FIELD; CROSS SECTIONS; ELASTIC SCATTERING; ELECTRIC DIPOLES; ELECTRONS; GROUND STATES; PHOTONS; QUANTUM PLASMA; SODIUM; SPHERICAL CONFIGURATION; SYMMETRY; THEORETICAL DATA; TWOBODY PROBLEM; VALENCE