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Title: Dynamics of positronium formation in positron-hydrogen collisions embedded in weakly coupled plasmas

Abstract

Dynamics of positronium (Ps) formation in an arbitrary s-state from an arbitrary s-state of the hydrogen atom in weakly coupled plasma has been investigated within the framework of a distorted-wave theory. The interactions among the charged particles in the plasma have been represented by Debye-Huckel potentials. Using simple variational hydrogenic wave functions and arbitrary order derivatives of the general three-denominator Lewis integral partial-wave scattering amplitudes have been obtained in closed forms. These distorted-wave scattering amplitudes have been used to make a detailed study on differential and total cross sections. It has been found that screening of the interaction potentials has significant effect on the scattering dynamics. Some notable features of cross sections have also been revealed.

Authors:
;  [1]
  1. Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal (India)
Publication Date:
OSTI Identifier:
22068924
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOM COLLISIONS; CHARGED PARTICLES; DISTORTED WAVE THEORY; HYDROGEN; PARTIAL WAVES; PLASMA; POSITRONIUM; POSITRONS; S STATES; SCATTERING AMPLITUDES; SCREENING; TOTAL CROSS SECTIONS; VARIATIONAL METHODS; WAVE FUNCTIONS; WEAK-COUPLING MODEL

Citation Formats

Nayek, Sujay, and Ghoshal, Arijit. Dynamics of positronium formation in positron-hydrogen collisions embedded in weakly coupled plasmas. United States: N. p., 2012. Web. doi:10.1063/1.4764467.
Nayek, Sujay, & Ghoshal, Arijit. Dynamics of positronium formation in positron-hydrogen collisions embedded in weakly coupled plasmas. United States. doi:10.1063/1.4764467.
Nayek, Sujay, and Ghoshal, Arijit. Thu . "Dynamics of positronium formation in positron-hydrogen collisions embedded in weakly coupled plasmas". United States. doi:10.1063/1.4764467.
@article{osti_22068924,
title = {Dynamics of positronium formation in positron-hydrogen collisions embedded in weakly coupled plasmas},
author = {Nayek, Sujay and Ghoshal, Arijit},
abstractNote = {Dynamics of positronium (Ps) formation in an arbitrary s-state from an arbitrary s-state of the hydrogen atom in weakly coupled plasma has been investigated within the framework of a distorted-wave theory. The interactions among the charged particles in the plasma have been represented by Debye-Huckel potentials. Using simple variational hydrogenic wave functions and arbitrary order derivatives of the general three-denominator Lewis integral partial-wave scattering amplitudes have been obtained in closed forms. These distorted-wave scattering amplitudes have been used to make a detailed study on differential and total cross sections. It has been found that screening of the interaction potentials has significant effect on the scattering dynamics. Some notable features of cross sections have also been revealed.},
doi = {10.1063/1.4764467},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}