Scattering of electrons by hydrogenic ions
Thesis/Dissertation
·
OSTI ID:5445958
The Algebraic Variational method in atomic physics is applied for the first time to the scattering (both elastic and inelastic) of electrons by highly stripped (hydrogenic) atomic ions. The overall behavior of the excitation 1s ..-->.. 2s and 1s ..-->.. 2p cross section is investigated using a 6 state expansion (1s-2s-2p one and two p pseudo-states) of the target wave function. The close coupling calculation is carried out up to a total angular momentum L/sub MAX/, (L/sub MAX/ less than or equal to 5) and for energies ranging from just above the n = 2 threshold to 5 times threshold, otherwise the Coulomb Born approximation with exchange is used. The computed collision strengths are then fit by an analytic formula. Finally, using a large pseudostate set, resonances between the n = 2 and n = 3 thresholds are investigated and accurately traced. Resonance enhancement of excitation rates is discussed. Results are reported for electron scattering by C/sup 5 +/ and O/sup 7 +/. Comparison is made to other theoretical calculations.
- Research Organization:
- Louisiana State Univ. and Agricultural and Mechanical Coll., Baton Rouge (USA)
- OSTI ID:
- 5445958
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANALYTICAL SOLUTION
ANGULAR MOMENTUM
CARBON IONS
CHARGED PARTICLES
COLLISIONS
DATA
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
INELASTIC SCATTERING
INFORMATION
ION COLLISIONS
IONS
NUMERICAL DATA
OXYGEN IONS
RESONANCE
SCATTERING
THEORETICAL DATA
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANALYTICAL SOLUTION
ANGULAR MOMENTUM
CARBON IONS
CHARGED PARTICLES
COLLISIONS
DATA
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
INELASTIC SCATTERING
INFORMATION
ION COLLISIONS
IONS
NUMERICAL DATA
OXYGEN IONS
RESONANCE
SCATTERING
THEORETICAL DATA