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

Journal Article · Thu Nov 15 00:00:00 EST 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4764467· OSTI ID:22068924

Nayek, Sujay; Ghoshal, Arijit ^[1]

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1. Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal (India)

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.

• OSTI ID: 22068924
• Journal Information: Physics of Plasmas, Vol. 19, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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