ISSN:
1434-6079
Keywords:
34.80.Nz
;
34.80.Qb
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A general framework using density matrices is developed for the analysis of atomic excitation by spin-polarized electrons. This framework is applied to the specific case of the 3S 1/2→3P 3/2 transition in Na, as studied by the time-reversed, superelastic process. The scattering is characterized in terms of physical parameters describing the collisionally excitedp-state, i.e., its angular momentum (L ⊥), linear polarization (P lin), and alignment angle (γ), with these parameters defined separately for singlet and triplet excitation. An expression for the scattering intensity is derived which is valid for arbitrary electron polarization and atomic state preparation. Specific examples are discussed with a view toward complete determination of the relevant scattering amplitudes and phases. Recent experimental results are reevaluated for comparison with theoretical calculations, and suggestions are made for future experiments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01384603
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