Accession Number : AD0817709

Title :   RESEARCH ON THE OPACITY OF LOW-TEMPERATURE AIR: OSCILLATOR STRENGTHS AND TRANSITION MOMENTS OF MOLECULAR BAND SYSTEMS.

Descriptive Note : Technical rept. 15 Sep 65-18 Nov 66,

Corporate Author : AVCO MISSILES SPACE AND ELECTRONICS GROUP LOWELL MA AVCO SPACE SYSTEMS DIV

Personal Author(s) : Wentink, Tunis, Jr. ; Isaacson, Louis ; Marram, Edward P.

Report Date : JUL 1967

Pagination or Media Count : 78

Abstract : New data are presented which yield absolute intensity constants of molecular bands related to the opacity of 'clear' air. The study resulted from a continuation of a previous program. Experimental work covering the 0.2- to 2.5- microns spectral region and employing radiative lifetime measurements yielded new or confirmatory data on some band systems of N2. From the lifetime results, the oscillator strengths (f-numbers) and electronic transition moments and transition probabilities were deduced. A major portion of the work was directed to a survey and critical review. Calculations based on the known data are presented. In addition to the several N 2 band systems, NO, the NO positive ion, and NO 2 are also discussed. (Author)

Descriptors :   (*AIR, ABSORPTION SPECTRA), NUCLEAR RADIATION, MOLECULAR SPECTROSCOPY, THERMAL RADIATION, RADIATION EFFECTS, ELECTRON TRANSITIONS, BAND SPECTRA, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, ELECTRON TRANSITIONS, SELECTION RULES(PHYSICS), RADIOACTIVE DECAY, IONS, NITROGEN COMPOUNDS, OXIDES, NITROGEN, DIOXIDES, EXCITATION, GAMMA RAYS, ULTRAVIOLET RADIATION, NITROGEN OXIDES, PHOTOMULTIPLIER TUBES, LASERS.

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE