Accession Number : ADD095270

Title :   Atomic Transition Probabilities. Volume II. Sodium through Calcium,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Wiese, W L ; Smith, M W ; Miles, B M

Report Date : Oct 1969

Pagination or Media Count : 310

Abstract : Atomic transition probabilities for about 5,000 spectral lines of the second ten elements, based on all available literature sources, are critically compiled. The data are presented in separate tables for each element and stage of ionization. For each ion the transitions are arranged according to multiplets, supermultiplets, transition arrays, and increasing quantum numbers. Allowed and forbidden transitions are listed separately. For each line the transition probability for spontaneous emission, the absorption oscillator strength, and the line strength are given along with the spectroscopic designation, the wavelength, the statistical weights, and the energy level of the upper and lower states. In addition, the estimated accuracy and the source are indicated. In short introductions, which precede the tables for each ion, the main justifications for the choice of the adopted data and for the accuracy rating are discussed. A general introduction contains a detailed discussion of the critical factors entering into each major experimental and theoretical method. It also includes a general critical assessment of the widely used Coulomb approximation, and a number of illustrative examples for the exploitation of regularities or systematic trends among oscillator strengths. (Author)

Descriptors :   *ELECTRON TRANSITIONS, *PROBABILITY, *ATOMIC ENERGY LEVELS, *SPECTRAL LINES, SODIUM, TEST AND EVALUATION, OSCILLATORS, STRENGTH(GENERAL), LITERATURE SURVEYS, EIGENVALUES, QUANTUM THEORY, WEIGHTING FUNCTIONS, STATISTICS, QUANTUM STATISTICS, CALCIUM, MAGNESIUM, SILICON, PHOSPHORUS, SULFUR, ARGON, ALUMINUM

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE