Compton scattering from positronium and validity of the impulse approximation

Journal Article · Sun May 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.053406· OSTI ID:21546789

Kaliman, Z; Pisk, K; Pratt, R H ^[1]

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1. Department of Physics, University of Rijeka, Rijeka (Croatia)

The cross sections for Compton scattering from positronium are calculated in the range from 1 to 100 keV incident photon energy. The calculations are based on the A{sup 2} term of the photon-electron or photon-positron interaction. Unlike in hydrogen, the scattering occurs from two centers and the interference effect plays an important role for energies below 8 keV. Because of the interference, the criterion for validity of the impulse approximation for positronium is more restrictive compared to that for hydrogen.

• OSTI ID: 21546789
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
BASIC INTERACTIONS
CALCULATION METHODS
COLLISIONS
COMPTON EFFECT
CROSS SECTIONS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELEMENTS
ENERGY RANGE
HYDROGEN
IMPULSE APPROXIMATION
INTERACTIONS
INTERFERENCE
KEV RANGE
NONMETALS
PARTICLE INTERACTIONS
PHOTON COLLISIONS
PHOTON-ELECTRON INTERACTIONS
PHOTON-LEPTON INTERACTIONS
PHOTON-POSITRON COLLISIONS
POSITRON COLLISIONS
POSITRONIUM
SCATTERING