Positron scattering from hydrogen atom embedded in weakly coupled plasma

Journal Article · Tue Jan 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4775724· OSTI ID:22113390

Ghoshal, Arijit ^[1]; Kamali, M. Z. M. ^[2]; Ratnavelu, K. ^[3]

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1. Department of Mathematics, Burdwan University, Golapbag, Burdwan 713 104, West Bengal (India)
2. Centre for Foundation Studies in Sciences, University of Malaya, 50603 Kuala Lumpur (Malaysia)
3. Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

The positron-hydrogen collision problem in weakly coupled plasma environment has been investigated by applying a formulation of the three-body collision problem in the form of coupled multi-channel two-body Lippmann-Schwinger equations. The interactions among the charged particles in the plasma have been represented by Debye-Huckel potentials. A simple variational hydrogenic wave function has been employed to calculate the partial-wave scattering amplitude. Plasma screening effects on various possible mode of fragmentation of the system e{sup +}+H(1s) during the collision, such as 1s{yields}1s and 2s{yields}2s elastic collisions, 1s{yields}2s excitation, positronium formation, elastic proton-positronium collisions, have been reported. Furthermore, a detailed study has been made on differential and total cross sections of the above processes in the energy range 13.6-350 eV of the incident positron.

• OSTI ID: 22113390
• Journal Information: Physics of Plasmas, Vol. 20, Issue 1; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CHARGED PARTICLES
ELECTRONS
HYDROGEN 1
LIPPMANN-SCHWINGER EQUATION
PARTIAL WAVES
PLASMA
PLASMA SIMULATION
POSITRON-ATOM COLLISIONS
POSITRONIUM
PROTONS
SCATTERING
SCATTERING AMPLITUDES
SCREENING
THREE-BODY PROBLEM
TOTAL CROSS SECTIONS
TWO-BODY PROBLEM
VARIATIONAL METHODS
WAVE FUNCTIONS