Hyperpolarizability of two electron atoms under exponential cosine screened coulomb potential

Hyperpolarizability of two electron atoms He, Li+, Be2+, B3+, and C4+ embedded under quantum plasma environment has been calculated for the first time using exponential cosine screened coulomb potential (ECSCP) arising out of the interaction of atomic charge cloud with such an environment. Coupled H...

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Bibliographic Details
Published in:Physics of plasmas 2015-12, Vol.22 (12)
Main Authors: Chaudhuri, Supriya K., Mukherjee, Prasanta K., Fricke, Burkhard
Format: Article
Language:English
Subjects:
Coulomb potential
Mathematical analysis
Optical properties
Parameters
Plasma physics
Screening
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Summary:Hyperpolarizability of two electron atoms He, Li+, Be2+, B3+, and C4+ embedded under quantum plasma environment has been calculated for the first time using exponential cosine screened coulomb potential (ECSCP) arising out of the interaction of atomic charge cloud with such an environment. Coupled Hartree-Fock theory within variational scheme has been utilised to estimate such nonlinear optical property for systematic variation of the screening parameter arising out of the coupling strength of the plasma with atomic charge cloud. Hyperpolarizability of the ions increases systematically with increase of the screening parameter. Results have been compared with respect to those obtained from the interaction of atomic systems with a Debye plasma environment giving rise to SCP. Interesting feature is observed for the polarizability and hyperpolarizability values under increasing screening parameters of ECSCP and SCP. Hyperpolarizability values for zero screening compare well with those available for the free ions.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4939021