Electron impact excitation of the electronic states of N/sub 2/. III. Transitions in the 12. 5--14. 2-eV energy-loss region at incident energies of 40 and 60 eV
Normalized absolute differential and integral cross sections for electron-impact excitation of five optically-allowed singlet states, two known triplet states, and two unknown triplet-like states of N/sub 2/, lying in the energy-loss range 12.5--14.2 eV, have been determined by analysis of electron energy-loss data at incident electron energies of 40 and 60 eV. The range of scattering angles considered in this work was 5/sup 0/ to 138/sup 0/. The optically allowed transitions are to the b /sup 1/Pi/sub u/, c /sup 1/Pi/sub u/, c' /sup 1/..sigma../sub u//sup +/, o /sup 1/Pi/sub u/, and b' /sup 1/..sigma../sub u//sup +/ states and the known triplet excitations are to the F /sup 3/Pi/sub u/ and G /sup 3/Pi/sub u/ states. Cross sections for excitation to two unidentified triplet-like states at 13.155 and 13.395 eV were also obtained from the data analysis. The relationship of the generalized oscillator strength for the dipole-allowed states obtained from the present measurements to known optical oscillator strengths is discussed.
- Research Organization:
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91103
- OSTI ID:
- 7214239
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:3; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
CRYOGENIC FLUIDS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 10-100
EXCITATION
FLUIDS
MOLECULE COLLISIONS
NITROGEN
NONMETALS