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Stability of the helium atom embedded in classical nonideal plasmas
Author(s) -
Das Biswajit,
Ghoshal Arijit
Publication year - 2021
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.26649
Subject(s) - helium atom , pseudopotential , plasma , atom (system on chip) , atomic physics , helium , ground state , stability (learning theory) , wave function , variational method , physics , quantum mechanics , machine learning , computer science , embedded system
Abstract Properties of the ground state of the helium atom embedded in classical nonideal plasmas have been investigated within the framework of variational method. The background plasma is described by a pseudopotential which has been deduced from the sequential solution of Bogolyubov's hierarchy equations. An extensive trial wave function is employed in Rayleigh–Ritz variational principle to compute various quantities associated with the ground state of helium atom quite accurately. A detailed study is made on the changes in those quantities introduced by the varying nonideality of the plasma in a wide range. In particular, special emphasis is made to study the stability of the atom in the plasma by computing the critical values of screening parameter and nonideal parameter accurately. To the best of our knowledge, such a study on the stability of helium atom in classical nonideal plasmas is reported for the first time in the literature.