Accession Number : ADD095221

Title :   Atomic Energy Levels - The Rare-Earth Elements. The Spectra of Lanthanum, Cerium, Praseodymium, Neodymium, Promethium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, and Lutetium,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Martin, W C ; Zalubas, Romuald ; Hagan, Lucy

Report Date : Apr 1978

Pagination or Media Count : 422

Abstract : Energy level data are given for 66 atoms and atomic ions of the 15 elements lanthanum (Z=57) through lutetium (Z=71). These data have been critically compiled from published and unpublished material. Only experimentally determined energy levels are included, the energies being restricted to excitation of outer-shell electrons and to inner-shell excitations up to the soft x-ray range. The levels were taken from analyses of the spectra of atomic gases wherever possible; however, the levels for several of the triply ionized rare earths are from analyses of the spectra of the ions in crystals or solutions. In addition to the level value and the parity, the J value, configuration and term assignments, and the experimental g value are listed wherever available. Leading percentages from the calculated eigenvector are also tabulated for each level if available. The levels are grouped into spectroscopic terms of appropriate coupling schemes where such groups appear meaningful. Ionization potentials are tabulated for most of the spectra. Complete references for the tabulated data are given for each spectrum.

Descriptors :   *ATOMIC ENERGY LEVELS, *ATOMIC SPECTRA, *ATOMIC SPECTROSCOPY, *RARE EARTH ELEMENTS, TABLES(DATA), IONIZATION, IONS, GASES, EIGENVECTORS, VALUE, ATOMIC ORBITALS, SOFT X RAYS, LANTHANUM, PROMETHIUM, ELECTRONS, PARITY, TERBIUM, PRASEODYMIUM, ATOMIC STRUCTURE

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE