dc.creator Penner, S. S. en_US dc.date.accessioned 2006-06-15T16:10:26Z dc.date.available 2006-06-15T16:10:26Z dc.date.issued 1952 en_US dc.identifier 1952-G-6 en_US dc.identifier.uri http://hdl.handle.net/1811/14320 dc.description Author Institution: Guggenheim Jet Propulsion Center, California Insitute of Technology en_US dc.description.abstract Simplified expressions have been developed for the engineering emissivity of uniformly distributed diatomic gases for nonoverlapping rotational lines with a resonance contour. Unfortunately the rotational half-widths for spectral lines arising from transitions between excited vibrational energy levels are generally not known. For this reason it was necessary to make the assumption that the rotational half-widths for transitions of the form $n \rightarrow n + v, v = 1$ or 2, are identical. The theoretical analysis is, however, sufficiently general to be useful without modification when accurate data concerning the dependence of linewidth on vibrational excitation become available. Explicit expressions have been obtained for the contributions to the total emissivity associated with individual vibration-rotation bands. Representative emissivity calculations have been carried out for CO and HCl. Comparison of the calculated emissivities of CO with experimental data shows only fair agreement, suggesting either that the assumed description of rotational half-widths is inadequate or else that the empirical emissivity data are not reliable at elevated temperatures. en_US dc.format.extent 150579 bytes dc.format.mimetype image/jpeg dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title THE EMISSION OF RADIATION FROM DIATOMIC GASES. IV. EMISSIVITY CALCULATIONS FOR CO AND HCl FOR NON-OVERLAPPING ROTATIONAL LINES AS A FUNCTION OF TEMPERATURE AND OPTICAL DENSITY$^{\ast}$ en_US dc.type article en_US
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