A New Analysis of X-Ray Adsorption Branching Ratios: Use of Russell-Saunders Coupling

Journal Article · Thu Apr 10 04:00:00 EDT 2008 · Chemical Physics Letters, 455(4-6):331-334

DOI:https://doi.org/10.1016/j.cplett.2008.02.085· OSTI ID:934621

Bagus, Paul S; Freund, Hajo; Kuhlenbeck, Helmut; Ilton, Eugene S

The intensities of X-Ray absorption peaks at core-level edges are considered in terms of Russell-Saunders multiplets. The contributions of different multiplets to the relativistic wavefunctions of the excited states are determined and the absorption intensity related to the contributions of the dipole allowed multiplets. This is a powerful method because the selection rules for multiplets are stronger than for relativistic J levels. It is also shown that differences in the radial extent of the spin-orbit split core spinors modify the intensity given by these symmetry arguments. Applications are considered for cases involving different degrees of Russell-Saunders or j-j coupling.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 934621
• Report Number(s): PNNL-SA-60636; 19823; KC0303020
• Journal Information: Chemical Physics Letters, 455(4-6):331-334, Journal Name: Chemical Physics Letters, 455(4-6):331-334 Journal Issue: 4-6 Vol. 455; ISSN CHPLBC; ISSN 0009-2614
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ADSORPTION
BRANCHING RATIO
DIPOLES
EXCITED STATES
Environmental Molecular Sciences Laboratory
J-J COUPLING
L-S COUPLING
MULTIPLETS
Russel-Saunders multiplets
SELECTION RULES
SPINORS
SYMMETRY
X RADIATION
XANES