# NITROGEN ABSORPTION COEFFICIENTS IN THE 580-1000 {\AA} WAVE LENGTH REGION

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/8238

Files Size Format View
1963-G-09.jpg 109.2Kb JPEG image

 dc.creator Huffman, R. E. en_US dc.creator Tanaka, Y. en_US dc.creator Larrabee, J. C. en_US dc.date.accessioned 2006-06-15T13:12:11Z dc.date.available 2006-06-15T13:12:11Z dc.date.issued 1963 en_US dc.identifier 1963-G-9 en_US dc.identifier.uri http://hdl.handle.net/1811/8238 dc.description Author Institution: Air Force, Cambridge Research Laboratories Bedford en_US dc.description.abstract “A photoelectric scanning technique, based on an intense, stabilized Hopfield helium-continuum background light source, has been used to measure $N_{2}$ absorption coefficients. The measurements have been done with a bandwidth of 0.5{\AA} over a range of pressures using an absorption cell placed behind the exit slit of a vacuum monochromator. Corrections were made for the pressure gradient m the flow absorption cell, the scattered light and fluorescence. From 1000A to 796A, the first ionization threshold $(N_{2}^{+} X{^{2}} \Sigma_{g}^{+})$, a number of sharp, intense bands are present with no evidence of a dissociation continuum. Below 796{\AA}, the ionization continuum appears to rise slowly, but it is difficult to observe because, the region to the nest ionization threshold at 742{\AA} ($(N^{+}_{2} A{^{2}}\Pi_{u})$) is crowded with many strong pre-ionized bands. Between 742{\AA} and the threshold of the state at 661 {\AA} the ionization continuum increases from roughly 400 to $780\;cm^{-1}$, and the intense, pre-ionized Hopfield Rydberg series is the dominant feature. At 661 {\AA}, the absorption coefficient rises abruptly to $980\;cm^{-1}$ and continues at approximately this constant value to 580 {\AA}.” en_US dc.format.extent 111838 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title NITROGEN ABSORPTION COEFFICIENTS IN THE 580-1000 {\AA} WAVE LENGTH REGION en_US dc.type article en_US