Small-angle electron differential cross sections for the Na 3[ital s]-3[ital p] transition: Accuracy of measurements
Journal Article
·
· Physical Review A; (United States)
- Department of Physics and Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, Georgia 30314 (United States)
Experimental small-angle electron differential cross sections (DCS's) for the resonance transition in Na at 10, 20, and 54.4 eV are contrasted through the generalized oscillator strength (GOS) and with the GOS from a recent universal extrapolation function [A. Z. Msezane and I. A. Sakmar, Phys. Rev. A 49, 2405 (1994)]. We conclude that almost all of the measurements reported suffer from an incorrect determination of the DCS near-zero scattering angles and/or from an improper normalization. Dynamic effects are unimportant at 20 and 54.4 eV at small scattering angles.
- OSTI ID:
- 6804429
- Journal Information:
- Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:5; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ACCURACY
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
EVALUATION
EXPERIMENTAL DATA
EXTRAPOLATION
FUNCTIONS
INFORMATION
METALS
NUMERICAL DATA
NUMERICAL SOLUTION
OSCILLATOR STRENGTHS
RESONANCE ABSORPTION
SCATTERING
SMALL ANGLE SCATTERING
SODIUM
SORPTION
THEORETICAL DATA
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ACCURACY
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
EVALUATION
EXPERIMENTAL DATA
EXTRAPOLATION
FUNCTIONS
INFORMATION
METALS
NUMERICAL DATA
NUMERICAL SOLUTION
OSCILLATOR STRENGTHS
RESONANCE ABSORPTION
SCATTERING
SMALL ANGLE SCATTERING
SODIUM
SORPTION
THEORETICAL DATA