Positronium formation using the multichannel Schwinger variational principle

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.233· OSTI ID:6521179

Roy, U; Mandal, P ^[1]

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1. Department of Mathematics, Visva-Bharati University, Santiniketan, Pin 731 235 (India)

The mutlichannel Schwinger variational formalism in the momentum space has been used to investigate elastic scattering and the ground-state positronium formation process in the positron-hydrogen collisions in the Ore gap region, 6.8--10.2 eV. The [ital s]-wave results obtained by employing a correlated discrete basis set are found to be in agreement with existing accurate Kohn variational results of Humberston [Can. J. Phys. 60, 591 (1982)].

• OSTI ID: 6521179
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:1; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664500* -- Special Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CALCULATION METHODS
COLLISIONS
ELASTIC SCATTERING
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
FUNCTIONS
GREEN FUNCTION
GROUND STATES
HYDROGEN
MANY-BODY PROBLEM
NONMETALS
NUMERICAL SOLUTION
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONIUM
SCATTERING
SCHWINGER VARIATIONAL METHOD
THREE-BODY PROBLEM
VARIATIONAL METHODS