Radiative decay of 4d/sup 9/4f/sup n+1/ excited states in LaB/sub 6/ and CeB/sub 6/

Journal Article · Sat Nov 15 00:00:00 EST 1986 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.34.6690· OSTI ID:5033916

Ichikawa, K; Nisawa, A; Tsutsumi, K

The N/sub 4,5/ emission spectra of LaB/sub 6/ and CeB/sub 6/ were measured to investigate the radiative decay of the 4d/sup 9/4f/sup n+1/ excited states, where n is the number of 4f electrons in the ground state. These spectra show an intense and broad emission peak above the N/sub 4,5/ threshold in addition to sharp peaks below the threshold. The energy positions of these emission peaks are compared with those of the peaks in the absorption spectra and the existing results of resonant photoemission. The comparison shows that the fine structure below the threshold coincides in energy with the multiplet structures in the absorption spectrum, and that the intense emission peak is located in the energy region where the electron-emission peak due to the direct recombination of the 4f electron with the 4d hole has been observed in resonant photoemission. The peaks observed in the energy region below and above the N/sub 4,5/ threshold are attributed to the radiative decay of the 4d/sup 9/4f/sup n+1/ excited states.

• Research Organization: College of Engineering, University of Osaka Prefecture, Mozu, Sakai, Osaka 591, Japan
• OSTI ID: 5033916
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 34:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM BORIDES
EMISSION SPECTRA
LANTHANUM BORIDES
ABSORPTION SPECTRA
EXCITED STATES
FINE STRUCTURE
PHOTOEMISSION
RESONANCE
BORIDES
BORON COMPOUNDS
CERIUM COMPOUNDS
EMISSION
ENERGY LEVELS
LANTHANUM COMPOUNDS
RARE EARTH COMPOUNDS
SECONDARY EMISSION
SPECTRA
360204* - Ceramics
Cermets
& Refractories- Physical Properties