Close-coupling cross sections for electron-impact excitation of Kr/sup 28+/

Journal Article · Tue Aug 15 04:00:00 EDT 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.40.1823· OSTI ID:5891489

Reed, K J; Henry, R J. W.

Coupling effects among the channels for collisional excitation of 2/ital s//sup 2/2p/sup 4/, 2/ital s/2/ital p//sup 5/, and 2/ital p//sup 6/ configurations of oxygenlike krypton have been reinvestigated and found to be small. In an earlier publication, it was reported that coupling to the 2/ital s/2/ital p//sup 5/ /sup 3/P/degree/ state has a strong influence on the cross section /sigma/(2/ital s//sup 2/2/ital p//sup 4//ital P//r arrow/2/ital p//sup 6/ /sup 1//ital S/). That apparent coupling is shown to be due to an inconsistency involving orthogonality and correlation functions. We solve the correct set of coupled integrodifferential equations using the niem, /Sigma/, and rmatrix codes. All three calculations are performed using the same atomic states and the same configurations to describe the target. We find very good agreement among the cross sections obtained from all three codes. We also calculated distorted-wave cross sections for the same set of transitions. The distorted-wave results are nearly identical to the results obtained with the close-coupling codes.

• Research Organization: High Temperature Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (US); Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5891489
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 40:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
COMPARATIVE EVALUATIONS
COMPUTER CODES
COUPLED CHANNEL THEORY
CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
I CODES
ION COLLISIONS
IONS
KRYPTON IONS
N CODES
R CODES