Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Nitrogen spectra, calibration

In emission spectroscopy the molecule or atom itself serves as the somce of light with discrete frequencies to be analyzed. In some cases, such as Exp. 39, which deals with the emission spectrum of molecular iodine vapor, excitation by a monochromatic or nearly monochromatic laser or mercury lamp is utilized. For other cases, such as the emission from N2 molecules, electron excitation of nitrogen in a discharge tube provides an intense somce whose spectrum is analyzed to extract information about the electronic and vibrational levels. Such low-pressure (p < 10 Torr) line somces are available with many elements, and lamps containing Hg, Ne, Ar, Kr, and Xe are often used for calibration purposes. The Pen-Ray pencil-type lamp is especially convenient for the visible and... [Pg.619]

See other pages where Nitrogen spectra, calibration is mentioned: [Pg.612]    [Pg.271]    [Pg.151]    [Pg.387]    [Pg.284]    [Pg.42]    [Pg.161]    [Pg.973]    [Pg.310]    [Pg.606]    [Pg.271]    [Pg.146]    [Pg.226]    [Pg.57]    [Pg.231]    [Pg.879]    [Pg.405]    [Pg.149]    [Pg.363]    [Pg.304]    [Pg.106]    [Pg.45]    [Pg.40]    [Pg.217]    [Pg.204]    [Pg.110]    [Pg.251]    [Pg.356]    [Pg.133]    [Pg.448]    [Pg.968]    [Pg.34]    [Pg.338]    [Pg.326]    [Pg.4]    [Pg.334]    [Pg.442]   
See also in sourсe #XX -- [ Pg.136 ]



SEARCH



Nitrogen calibration

Nitrogen spectrum

© 2024 chempedia.info