Effect of second-order exchange in electron-hydrogen scattering

Journal Article · Mon May 07 00:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.2265· OSTI ID:6864483

Madison, D H; Bray, I; McCarthy, I ^[1]

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1. Physics Department, University of Missouri-Rolla, Rolla, MO (USA) Flinders University of South Australia, Bedford Park, South Australia (Australia)

The electron-hydrogen scattering problem has been a nemesis to theoretical atomic physicists due to the fact that even the most sophisticated of theoretical calculations, both perturbative and nonperturbative, do not agree with experiment. The current opinion is that the perturbative approach cannot be used for this problem since recent second-order calculations are not in agreement with the experimental data and higher-order calculations are deemed impractical. However, these second-order calculations neglected second-order exchange. We have now added exchange to the second-order calculation and have found that the primary source of disagreement between experiment and theory for intermediate energies is attributable not to higher-order terms but to second-order exchange.

• OSTI ID: 6864483
• Journal Information: Physical Review Letters; (USA), Vol. 64:19; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON-ATOM COLLISIONS
DIFFERENTIAL CROSS SECTIONS
HYDROGEN
ANGULAR CORRELATION
ATOMIC PHYSICS
CORRELATIONS
ERRORS
EV RANGE 10-100
EXCHANGE INTERACTIONS
EXCITATION
INELASTIC SCATTERING
PERTURBATION THEORY
S MATRIX
THEORETICAL DATA
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
INFORMATION
INTERACTIONS
MATRICES
NONMETALS
NUMERICAL DATA
PHYSICS
SCATTERING
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