Spin-dependent observables in electron-sodium scattering calculated using the coupled-channel optical method

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.47.317· OSTI ID:7118926

Bray, I; McCarthy, I E ^[1]

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1. Electronic Structure of Materials Centre, School of Physical Sciences, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide 5001 (Australia)

We present coupled-channel optical (CCO) calculations of the elastic and the 3 [sup 2][ital S]--3 [sup 2][ital P] transitions in electron-sodium scattering at 1 to 40 eV. The results are compared with the measurements of spin asymmetries [ital A][sub ex], the ratio of final- to initial-spin polarization perpendicular to the scattering plane [ital P][prime]/[ital P], and the angular momentum transferred to the atom perpendicular to the scattering plane for singlet [ital L][sub [perpendicular]][sup [ital S]], triplet [ital L][sub [perpendicular]][sup [ital T]], and spin-averaged [ital L][sub [perpendicular]]. We find excellent agreement with measurements of all of these parameters at all energies. For energies above the ionization threshold we find that inclusion of the continuum target states in the CCO formalism has a very large effect on the spin asymmetries, particularly the 3 [sup 2][ital P] channel, and brings about excellent agreement with experiment. The treatment of the dynamics of the interaction is such that the quality of the structure approximation of the sodium atom may be readily studied.

• OSTI ID: 7118926
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:1; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ANGULAR MOMENTUM
ASYMMETRY
ATOM COLLISIONS
COLLISIONS
COUPLED CHANNEL THEORY
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
INELASTIC SCATTERING
METALS
PARTICLE PROPERTIES
SCATTERING
SODIUM
SPIN