| dc.description.abstract | In this study, for the first time in the related literature, the positronium atom embedded
in the plasma environment with energy-dependent potential interaction, under spherical
confinement, is investigated. The more general exponential cosine-screened Coulomb
(MGECSC) potential is used to describe the interaction potential of the positronium atom in
the plasma environment.Amongfour different sets ofMGECSCpotential tomodelDebye and
quantum plasma, the most general form for calculations is considered, and thus, the positronium
atom investigated contained energy-dependent potential interaction embedded in the
quantum plasma environment. The energy dependence of the interaction potential is chosen
linearly and rendered to a tunable case by using a dimensionless parameter.MGECSC potential
is modified by considering the linear energy dependence. The nonrelativistic spectrum
and wave functions of the energy-dependent MGECSC potential (energy-dependent plasma
(EDP) potential) for the positronium atom are obtained using the Runge–Kutta–Fehlberg
(RKF) method. The effect of the plasma shielding parameters, the spherical encompassing
effect and the energy dependence on generation and control of the orbital charge-currents
and the induced magnetic fields of the positronium atom are examined. Furthermore, the
transition energies, the oscillator strengths and the dipole polarizability are studied for only
energy dependence. For the energy-independent case, the structural property review is also
performed, and the results are compared. Alternatives to each other of the effective potential
parameters on the charge-currents, the induced magnetic fields and the structural properties
are also discussed. The charge-current and induced magnetic field analyses are also
performed for energy-dependent potential-plasma environment case, plasma environmentenergy-
independent potential case, no-plasma environment-energy-dependent potential case,
and no-plasma environment-energy-independent potential case. | tr |
