Published February 1994 | Version v1
Journal article Metadata-only

Asymmetric two-electron excitations in atomic strontium and barium

Creators

  • 1. Department of Physics and Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, Colorado 80309-0440 (United States)

Description

We present a general nonperturbative calculation of the photoionization cross section for highly asymmetrical two-electron systems. The calculations were performed using the eigenchannel R-matrix procedure together with multichannel quantum-defect theory, including the effects of long-range multipole interactions. The isolated-core approximation is extended to treat two-photon absorption. The calculations permit a detailed interpretation of recent experimental measurements in atomic strontium and barium

Additional details

Publishing Information

Journal Title
Physical Review. A
Journal Volume
49
Journal Issue
2
Journal Page Range
p. 1029-1040.
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
25042319
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
ASYMMETRY; ATOMS; BARIUM; CROSS SECTIONS; EIGENVALUES; EXCITED STATES; MULTI-PHOTON PROCESSES; MULTIPOLES; PHOTOIONIZATION; R MATRIX; STRONTIUM; TWO-BODY PROBLEM
Descriptors DEC
ALKALINE EARTH METALS; ELEMENTS; ENERGY LEVELS; IONIZATION; MANY-BODY PROBLEM; MATRICES; METALS