Metastable excitations in heliumlike ions by electrons and positrons: A distorted-wave approach

Journal Article · Tue Nov 15 04:00:00 EST 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.5415· OSTI ID:6752514

Katiyar, A K; Srivastava, R

A distorted-wave Born approximation has been adopted to perform calculations of the cross sections for electron- and positron-impact excitations in positive heliumlike ions initially from their metastable excited states. 2 /sup 1/S..-->..n /sup 1/P and 2/sup 3/S..-->..n/sup 3/P (n = 2,3) transitions in each C/sup 4+/, N/sup 5+/, O/sup 6+/, and Ne/sup 8+/ heliumlike ion are considered. The calculated total excitation cross-section results are compared with other previously reported theoretical estimates.

• Research Organization: Department of Physics, University of Roorkee, Roorkee 247667, India
• OSTI ID: 6752514
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:10; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BORN APPROXIMATION
CARBON IONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DISTORTED WAVE THEORY
DWBA
ELECTRON COLLISIONS
ELECTRON EXCHANGE
ELECTRON TRANSFER
ELECTRON-ION COLLISIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
ION COLLISIONS
IONS
METASTABLE STATES
NEON IONS
NITROGEN IONS
OXYGEN IONS
POSITRON COLLISIONS
POSITRON-ION COLLISIONS