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Structural properties of Li atom under quantum and classical plasmas: A composite variational framework
Author(s) -
Mondal Santanu,
Nayek Sujay Kr.,
Saha Jayanta K.
Publication year - 2021
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.202100009
Subject(s) - principal quantum number , atomic physics , physics , atom (system on chip) , quantum , valence (chemistry) , ion , exponential function , electron , valence electron , plasma , eigenvalues and eigenvectors , quantum mechanics , computer science , quantum dissipation , embedded system , mathematical analysis , mathematics
Structural properties of 1 s 2 nl ( 2 L) [ n = 2–5, l = 0–4; where, n and l are the principal quantum number and orbital angular momentum quantum number, respectively] states of Li atom embedded in classical weakly coupled plasma (WCP) and dense quantum plasma (DQP) have been discussed. The Debye‐H u ¨ ckel potential or the screened‐Coulomb potential (SCP) and exponential‐cosine‐screened Coulomb potential (ECSCP) have been used to mimic the WCP and DQP, respectively. Li atom has been treated as a composite system with a frozen core Li + ion and a chemically active valence electron. The Rayleigh‐Ritz variational method with Hylleraas‐type basis set has been used to estimate the energy eigenvalue of 1 s 2 ( 1 S) state of Li + ion core and a pure exponential basis has been considered to compute the energy of nl ( 2 L) states of the valence electron of Li atom. The influence of ECSCP and SCP on the radial probability distribution of the valence electron of the Li atom has also been studied.