Electron-impact excitation of Al/sup 2+/

Journal Article · Sat Jan 14 23:00:00 EST 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.39.537· OSTI ID:6554742

Mitroy, J; Norcross, D W

Detailed calculations of the electron-impact excitation of the sodiumlike ion Al/sup 2+/ were performed using both the unitarized Coulomb-Born approximation and the close-coupling approach. Calculations were undertaken at both the five-state (3s, 3p, 3d, 4s, and 4p) and nine-state (+4d-bar, 4f-bar, 5s-bar, and 5p-bar) levels of approximation. Calculations using Hamiltonians both with and without (semiempirical) core-polarization potentials were completed. Particular attention was paid to the resonance (3s-3p) excitation. The inclusion of core-polarization potentials resulted in cross sections for the resonance excitation that are 10% smaller in magnitude. As an additional check on the calculations, binding energies of Al/sup +/ bound states, and oscillator strengths for Al/sup 2+/ transitions, were also computed and compared with the results of measurements and other calculations.

• Research Organization: Joint Institute for Laboratory Astrophysics, University of Colorado National Bureau of Standards, Boulder, Colorado 80309-0440
• OSTI ID: 6554742
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 39:2; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM IONS
BINDING ENERGY
BORN APPROXIMATION
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
HAMILTONIANS
ION COLLISIONS
IONS
MATHEMATICAL OPERATORS
OSCILLATOR STRENGTHS
QUANTUM OPERATORS
RESONANCE