Infrared emission spectra of flames

Infrared Emission Spectra of Flames 451

The infrared emission spectra of a hydrogen flame and' of a natural gas flame have been compared in the region from 1. 7p. to 24p.. Emission bands have been observed at 1.87p., 2.78p. , 4.37p., 6.20p., and 15p. that a re produced by molecules of H 20 and CO2• Another band at 3.316p. is attributed to methane. From 3.0p. to 3.8p. there are a number of rotational lines, some of which may be produc...

Infrared emission spectra of krypton and argon.

The analysis of the spectra of the noble atmospheric gases, utilizing descrip tive daLa cove ring the photographicall y accessible region, has long indicated the possibili ty of a considerable ex te nsion of most of t hese spectra into the infrared r egion beyond 1.3 microns. Obse r vations of the spectra of krypton a nd a rgo n, in the region be tween 1 and 2 mi crons, have bee n made with a P...

Visible to near infrared emission spectra of electron-excited H2

H2 is the most abundant molecule in the universe and is an active component of star formation. Inside dense molecular clouds, heating and ionization occur by cosmic rays, X-rays and shock waves, generating energetic electrons. Collisional excitation by electrons is the source of both UV and Visible-optical-IR (VOIR) H2 fluorescence in the ISM, circumstellar disks and certain classes of stars [1...

Mid-infrared Atomic Fine-structure Emission Line Spectra of Luminous Infrared Galaxies: Spitzer/irs Spectra of the Goals Sample

We present the data and our analysis of mid-infrared atomic fine-structure emission lines detected in Spitzer/IRS high-resolution spectra of 202 local Luminous Infrared Galaxies (LIRGS) observed as part of the Great Observatories All-sky LIRG Survey (GOALS). We readily detect emission lines of [SIV], [NeII], [NeV], [NeIII], [SIII]18.7 μm, [OIV], [FeII], [SIII]33.5μm, and [SiII]. More than 75% o...

Infrared Spectra of Tissues.