Excitation of Be/sup +/ by electron impact. [2 to 8 Ry]

Technical Report · Thu Sep 01 00:00:00 EDT 1977

OSTI ID:5330845

Henry, R J.W.; van Wyngaarden, W L; Matese, J J

Calculations of the collision strength for excitation of the 2p state of Be/sup +/ are performed at incident energies of 2, 5, and 8 Ry. A modified five state close coupling expansion is used in which three pseudo-states anti 3s, anti 3p, and anti 3d are retained in addition to target states 2s and 2p. Pseudostates are chosen so that, for a given incident electron energy, there is a minimum in the dominant partial wave collision strength with respect to variation of the range parameter. Collision strengths are obtained which lie between five state calculations of Hayes et al. and measurements of Taylor et al.

• Research Organization: Louisiana State Univ., Baton Rouge (USA). Dept. of Physics and Astronomy; Southwestern Louisiana Univ., Lafayette (USA). Dept. of Physics
• OSTI ID: 5330845
• Report Number(s): ORO-4881-12
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
BERYLLIUM IONS
CHARGED PARTICLES
COLLISIONS
COUPLING
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
ION COLLISIONS
IONS
PARTIAL WAVES
SERIES EXPANSION
VARIATIONS