Accession Number : AD0705218

Title :   LINE RADIATION IN NON LOCAL THERMODYNAMIC EQUILIBRIUM.

Descriptive Note : Technical note,

Corporate Author : POLITECNICO DI TORINO (ITALY) ISTITUTO DI MECCANICA APPLICATA AERODINAMICA E GASDINAMICA

Personal Author(s) : Germano,Massimo

Report Date : DEC 1969

Pagination or Media Count : 19

Abstract : In the paper, the problem of the line radiation in condition of non thermodynamic equilibrium has been treated and the results obtained have been applied to the study of the imprisonment of resonance radiation. It was found that the excited level, and by consequence the resonance radiation, decays in two ways in competition each other: one is a diffusive decay, due to the fact that the gas is generally very thick for frequencies near the center of the absorption line, and the other is an exponential decay due to the far 'wings' of the absorption coefficient where the gas is optically thin. (Author)

Descriptors :   (*ATOMIC SPECTROSCOPY, ELECTRON TRANSITIONS), ATOMIC ORBITALS, MATHEMATICAL ANALYSIS, ELECTRON TRANSITIONS, LINE SPECTRA, ITALY

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE