Published July 1980
| Version v1
Journal article
Interband, collective and atomic (p,d) excitations from 2 to 160 eV in Sc, Y, lanthanides and actinides and in some of their compounds by FEELS
Description
Fast electron energy loss spectroscopy (FEELS) is used to obtain the various optical constants over a large energy range in Sc, Sc2O3, Y, Y2O3, Gd, Gd2O3, Dy, LaF3, GdF3, DyF3, Th, ThF4, U and UF4. For the first time a comprehensive study of the 3p to 6p spectra is performed in the 30-60 eV range, Z varying between 21 and 92. Interesting common features of these resonant p spectra are emphasized and discussed in the light of recent theoretical work. Below 30 eV, strong interband transitions are observed in the wide gap insulators (oxides and fluorides), while the metal spectra are dominated by collective or plasmon excitations. At higher energies, 4d-lanthanide and 5d-actinide spectra are compared with X-UV photoabsorption measurements
Additional details
Publishing Information
- Journal Title
- J. Phys. (Paris)
- Journal Volume
- 41
- Journal Issue
- 7
- Series
- J. Phys. (Paris).
- Journal Page Range
- 603-613
- ISSN
- 0302-0738
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 11566630
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- D STATES; DYSPROSIUM; DYSPROSIUM FLUORIDES; EV RANGE; EXCITATION; GADOLINIUM; GADOLINIUM FLUORIDES; GADOLINIUM OXIDES; LANTHANUM FLUORIDES; P STATES; SCANDIUM; SCANDIUM OXIDES; SPECTRA; THORIUM; THORIUM FLUORIDES; URANIUM; URANIUM FLUORIDES; YTTRIUM; YTTRIUM OXIDES
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; DYSPROSIUM COMPOUNDS; ELEMENTS; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; FLUORIDES; FLUORINE COMPOUNDS; GADOLINIUM COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; LANTHANUM COMPOUNDS; METALS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; RARE EARTHS; SCANDIUM COMPOUNDS; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; URANIUM COMPOUNDS; YTTRIUM COMPOUNDS