Plasma screening effects on the energies of hydrogen atom under the influence of velocitydependent potential
Abstract
In order to examine the plasma screening and velocitydependent potential effects on the hydrogen atom, the Schrödinger equation including a more general exponential cosine screened Coulomb and velocitydependent potential is solved numerically in the framework asymptotic iteration method. The more general exponential cosine screened Coulomb potential is used to model Debye and quantum plasma for the specific values of the parameters in its structure. However, in order to examine effects of velocitydependent potential on energy values of hydrogen atom in Debye and quantum plasma, the isotropic form factor of velocitydependent potential is given as harmonic oscillator type, ρ(r)=ρ{sub o}r{sup 2}. Then, the energies of s and p states are calculated numerically without any approximation. In order to investigate thoroughly plasma screening effects and contribution of velocitydependent potential on energy values of hydrogen atom, the corresponding calculations are carried out by using different values of parameters of more general exponential cosine screened Coulomb potential and isotropic dependence, results of which are discussed.
 Authors:
 Department of Physics, Karamanoglu Mehmetbey University, 70100 Karaman (Turkey)
 Publication Date:
 OSTI Identifier:
 22299832
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATOMS; COULOMB FIELD; HARMONIC OSCILLATORS; HYDROGEN; POTENTIALS; QUANTUM PLASMA; SCHROEDINGER EQUATION; VELOCITY
Citation Formats
Bahar, M. K. Plasma screening effects on the energies of hydrogen atom under the influence of velocitydependent potential. United States: N. p., 2014.
Web. doi:10.1063/1.4890125.
Bahar, M. K. Plasma screening effects on the energies of hydrogen atom under the influence of velocitydependent potential. United States. doi:10.1063/1.4890125.
Bahar, M. K. Tue .
"Plasma screening effects on the energies of hydrogen atom under the influence of velocitydependent potential". United States.
doi:10.1063/1.4890125.
@article{osti_22299832,
title = {Plasma screening effects on the energies of hydrogen atom under the influence of velocitydependent potential},
author = {Bahar, M. K.},
abstractNote = {In order to examine the plasma screening and velocitydependent potential effects on the hydrogen atom, the Schrödinger equation including a more general exponential cosine screened Coulomb and velocitydependent potential is solved numerically in the framework asymptotic iteration method. The more general exponential cosine screened Coulomb potential is used to model Debye and quantum plasma for the specific values of the parameters in its structure. However, in order to examine effects of velocitydependent potential on energy values of hydrogen atom in Debye and quantum plasma, the isotropic form factor of velocitydependent potential is given as harmonic oscillator type, ρ(r)=ρ{sub o}r{sup 2}. Then, the energies of s and p states are calculated numerically without any approximation. In order to investigate thoroughly plasma screening effects and contribution of velocitydependent potential on energy values of hydrogen atom, the corresponding calculations are carried out by using different values of parameters of more general exponential cosine screened Coulomb potential and isotropic dependence, results of which are discussed.},
doi = {10.1063/1.4890125},
journal = {Physics of Plasmas},
number = 7,
volume = 21,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2014},
month = {Tue Jul 15 00:00:00 EDT 2014}
}

A more general exponential cosine screened Coulomb potential is used for the first time to investigate the screening effects on the hydrogen atom in plasmas. This potential is examined for four different cases that correspond to four different type potentials when the different parameters are used in the potential within the framework of the wellknown asymptotic iteration method. By solving the corresponding the radial Schroedinger equation with the screened and exponential cosine screened Coulomb potentials and comparing the obtained energy eigenvalues with the results of other studies, the applicability of the method to this kind of plasma physics problem ismore »

Influence of the renormalization plasma screening on the electronatom collision in partially ionized plasmas
The renormalization plasma screening effects on the elastic electronatom collision are investigated in partially ionized dense hydrogen plasmas using the eikonal method. It is found that the renormalization plasma screening suppresses the eikonal phase shift and cross section for the elastic electronatom collision in partially ionized plasmas. It is also found that the renormalization plasma screening effect on the elastic electronatom collision process increases with an increasing impact parameter. In addition, it is found that the maximum position of the differential cross section is receded from the center of the atom with an increase of the Debye length. 
Spinpolarized hydrogen Rydberg timeofflight: Experimental measurement of the velocitydependent H atom spinpolarization
We have developed a new experimental method allowing direct detection of the velocity dependent spinpolarization of hydrogen atoms produced in photodissociation. The technique, which is a variation on the H atom Rydberg timeofflight method, employs a doubleresonance excitation scheme and experimental geometry that yields the two coherent orientation parameters as a function of recoil speed for scattering perpendicular to the laser propagation direction. The approach, apparatus, and optical layout we employ are described here in detail and demonstrated in application to HBr and DBr photolysis at 213 nm. We also discuss the theoretical foundation for the approach, as well asmore »