A study of electron impact excitation of NO: The vacuum ultraviolet from 40 to 170 nm

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Journal of Geophysical Research; (USA)

DOI:https://doi.org/10.1029/JA094iA07p09093· OSTI ID:5946751

Ajello, J M; Pang, K D; Franklin, B O ^[1]; Howell, S K; Bowring, N J ^[2]

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1. California Institute of Technology, Pasadena (USA)
2. Manchester Univ. (England)

The electron impact induced fluorescence spectrum of NO at 200 eV has been measured in a crossed-beam experiment. The wavelength range studied spanned the range of the vacuum ultraviolet (VUV) from 40 to 170 nm. The basis of the absolute cross sections was the newly established Ly {alpha} cross section standard from electron impact dissociation of H{sub 2}. By comparison with this standard the cross section of the N I (120.0 nm) transition produced by dissociative excitation of 200 eV was established to be 1.73 {plus minus} 0.38 {times} 10{sup {minus}18} cm{sup 2}. The cross section of all other features in the VUV were measured. The extreme ultraviolet spectrum from 40 to 120 nm consists entirely of emissions from excited N I, N II, O I, and O II atomic dissociation fragments. In addition, in the far ultraviolet (FUV) from 120 to 170 nm the authors report a measurement of the cross section of the NO{sup +}(A{sup I}II {yields} X{sup 1}{Sigma}{sup +}) Baer-Miescher (BM) bands. They develop a band model of the FUV spectrum which consists of the BM bands.

• OSTI ID: 5946751
• Journal Information: Journal of Geophysical Research; (USA), Journal Name: Journal of Geophysical Research; (USA) Vol. 94:A7; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
ATMOSPHERIC CHEMISTRY
AURORAE
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHEMISTRY
COLLISIONS
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FAR ULTRAVIOLET RADIATION
IONOSPHERE
IONS
LYMAN LINES
MOLECULAR IONS
MOLECULE COLLISIONS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PLANETARY ATMOSPHERES
PLANETARY IONOSPHERES
RADIATIONS
SPECTRA
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA