Photoelectron studies of the 4f and 6s subshells in atomic ytterbium

Journal Article · Sat Feb 01 00:00:00 EST 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.33.1024· OSTI ID:6033852

Svensson, W A; Krause, M O; Carlson, T A; Radojevic, V; Johnson, W R

The dynamic properties of the 4f subshell in atomic ytterbium were studied experimentally with the aid of synchrotron radiation and theoretically in the relativistic random-phase approximation (RRPA). Satisfactory agreement between experiment and theory was obtained for the US parameter, the R(4f/sub 7/2//4f/sub 5/2/) branching ratio and the relative partial cross sections between 17.5 and 100 eV. This indicates that 4f photoionization is described well in the RRPA model. The properties of the 6s subshell were measured between 17.5 and 50 eV. In the resonance region 5p 5d the population of the three main exit channels 6s, 4f/sub 7/2/, and 4f/sub 5/2/ were recorded in detail between 24 and 31 eV using the constant-ionic-state technique. For the approximately 15 resonance states similar populations of all channels were found. The 5p resonance structure was also calculated using a limited number of interacting channels in the multichannel quantum-defect theory.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6033852
• Journal Information: Phys. Rev. A; (United States), Vol. 33:2
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
YTTERBIUM
ENERGY-LEVEL TRANSITIONS
PHOTOELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
RESONANCE
SYNCHROTRON RADIATION
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY RANGE
METALS
RADIATIONS
RARE EARTHS
SPECTROSCOPY
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory