Optical studies of ion-molecule collisions: N/sub 2//sup +/ + O/sub 2/
Inelastic collision processes of the N/sub 2//sup +/ + O/sub 2/ system have been examined by studying emissions of the spectral features in the range from 600 to 8000 A at ion impact energies from threshold to 7 keV. Emission cross sections of the vibrational bands of the N/sub 2//sup +/ first negative (B /sup 2/..sigma../sub u//sup +/ ..-->.. X /sup 2/..sigma../sub g//sup +/) and N/sub 2/ second positive (C /sup 3/PI/sub u//sup 2/ ..-->.. B /sup 3/PI/sub g/) systems as well as the emission cross section of the O/sub 2//sup +/ first negative (b /sup 4/..sigma../sub g//sup -/ ..-->.. a /sup 4/PI/sub u/) system have been determined as a function of energy. The relative population of the vibrational levels of the N/sub 2//sup +/ B state have also been determined and compared with previous measurements for the N/sub 2//sup +/ + He and N/sub 2//sup +/ + Ne systems. The relative population appears to be describable in terms of the Franck-Condon principle at higher energies, in agreement with other experiments. Thresholds and emission cross sections have been determined as a function of impact energy for lines originating from several excited configurations of NI(3s /sup 4/P, 3s /sup 2/P, 3s' /sup 2/D, 3d /sup 4/P), NII (2p/sup 3/ /sup 2/D/sup 0/), OI(3s /sup 3/S/sup 0/), and OII(2p/sup 4/ /sup 4/P), resulting from collision induced dissociation. Emission cross sections for additional lines originating from excited configurations of NI, NII, OI, and OII have also been determined at 4 keV. In contrast to collisions which produce ground state dissociation fragments, the cross section for the production of excited dissociation fragments appears to be relatively small.
- Research Organization:
- Florida Univ., Gainesville (USA)
- OSTI ID:
- 5330236
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DISSOCIATION
ELEMENTS
EMISSION SPECTRA
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FRANCK-CONDON PRINCIPLE
INELASTIC SCATTERING
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
MOLECULAR IONS
MOLECULE COLLISIONS
NITROGEN IONS
NONMETALS
OXYGEN
SCATTERING
SPECTRA
VIBRATIONAL STATES
VISIBLE SPECTRA