https://doi.org/10.1140/epjp/s13360-021-02288-w
Regular Article
Multipole polarizabilities and dipole oscillator strengths of H-atom in nonideal classical plasmas
1
School of Chemistry, University of Hyderabad, 500046, Hyderabad, India
2
Department of Physics and Astrophysics, University of Delhi, 110007, Delhi, India
3
Department of Physics, Motilal Nehru College, University of Delhi, 110021, Delhi, India
4
Department of Physics and Electronics, Rajdhani College, University of Delhi, 110015, Delhi, India
5
Department of Physics, Swami Shraddhanand College, University of Delhi, 110036, Delhi, India
Received:
22
September
2021
Accepted:
13
December
2021
Published online:
3
January
2022
We have solved the time-independent Schrödinger equation to evaluate energy eigenvalues and eigenfunctions of spherically confined H-atom embedded in nonideal classical plasma (NICP) potential and Debye-Hückel potential (DHP). Screening parameter (
) and nonideal plasma coupling parameter (
) are calculated for a wide range of plasma electron density (
) and plasma temperature (
), which are further used to evaluate dipole oscillator strengths and static multipole polarizabilities of the H-atom for both the plasma potentials. In comparison to the Debye-Hückel potential, nonideal classical plasma potential significantly affects the multipole polarizabilities at low and high . Our results clearly indicate that, as increases or decreases, the polarizabilities corresponding to both the plasma potentials become almost equal. We have studied the effect of size of enclosing spherical boundary (
) on the multipole polarizabilities. The size of the spherical boundary strongly controls pressure experienced by the H-atom. At a fixed , the multipole polarizabilities are found to increase sharply as approaches its critical value.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
