Fitting phase shifts to electron-ion elastic scattering measurements

Citation
Mc. Per et As. Dickinson, Fitting phase shifts to electron-ion elastic scattering measurements, J PHYS B, 33(17), 2000, pp. 3485-3494
Citations number
19
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
ISSN journal
09534075 → ACNP
Volume
33
Issue
17
Year of publication
2000
Pages
3485 - 3494
Database
ISI
SICI code
0953-4075(20000914)33:17<3485:FPSTEE>2.0.ZU;2-C
Abstract
We have derived non-Coulomb phase shifts from measured differential cross s ections for electron scattering by the ions Na+, Cs+, N3+, Ar8+, and Xe6+ a t energies below the inelastic threshold. Values of the scaled squared devi ation between the observed and fitted differential cross sections, chi(2), for the best-fit phase shifts were typically in the range 3-6 per degree of freedom. Generally good agreement with experiment is obtained, except for wide-angle scattering by Ar8+ and Xe6+. Current measurements do not define phase shifts to better than approximate to 0.1 rad even in the most favoura ble circumstances and uncertainties can be much larger.