State-to-state study of the electron transfer reactions N/sup +//sub 2/(X,v' = 0--2)+Ar(/sup 1/S/sub 0/). -->. N/sub 2/(X,v) +Ar/sup +/(/sup 2/P/sub 3/2,1/2/)
Relative vibrational-state-selected total cross sections sigma/sub v//sub '/, v' = 0--2, for the reaction N/sup +//sub 2/(X,v' = 0--2)+Ar(/sup 1/S/sub 0/)..-->..N/sub 2/(X,v +Ar/sup +/(/sup 2/P/sub 3/2,1/2/) (reaction (1)), over the center-of-mass collisional energy (E/sub c.m./) range of 1.2--320 eV have been determined using the crossed ion--neutral beam photoionization apparatus. The experimental results at E/sub c.m./ = 1.2--40 eV are in agreement with those obtained in previous experimental and theoretical studies, indicating that sigma/sub 0/ is substantially less than sigma/sub 1/ and sigma/sub 2/. As E/sub c.m./ is increased, sigma/sub 0/ becomes comparable to sigma/sub 1/ and sigma/sub 2/ in the E/sub c.m./ range of --140--200 eV. At E/sub c.m./ = 260 and 320 eV, the cross sections are in the order sigma/sub 0/>sigma/sub 1/>sigma/sub 2/. The fractions of Ar/sup +/(/sup 2/P/sub 1//sub ///sub 2/) resulting from reaction (1), X/sub v//sub '//sub ..-->..//sub 1/2/, v' = 0--2, at E/sub c.m./ = 4--320 eV have been measured by the charge exchange method. The measurement shows that the Ar/sup +/ product ions are predominantly(approx. >80%) formed in the /sup 2/P/sub 3//sub ///sub 2/ state, an observation qualitatively in accord with the predictions of semiclassical multistate calculations. The predicted values for X/sub v//sub '//sub ..-->..//sub 1/2/, v' = 0--2, at E/sub c.m./ = 8, 20, and 40 eV are higher than the experimental values.
- Research Organization:
- Ames Laboratory, U. S. Department of Energy and Department of Chemistry, Iowa State University, Ames, Iowa 50011
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 7104810
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 85:12; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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State-to-state study of the electron transfer reactions Ar/sup +/(/sup 2/P/sub 3/2,1/2/)+N/sub 2/(X,v = 0). -->. Ar(/sup 1/S/sub 0/) +N/sup +//sub 2/ (X,v')
Experimental and theoretical total state-selected and state-to-state absolute cross sections. II. The Ar sup + ( sup 2 P sub 3/2,1/2 )+H sub 2 reaction
Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
CHARGE EXCHANGE
CHARGED PARTICLES
CHEMICAL REACTION KINETICS
COLLISIONS
CROSS SECTIONS
ELECTRON TRANSFER
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EV RANGE 100-1000
EXCITED STATES
FLUIDS
GASES
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KINETICS
MOLECULAR IONS
NITROGEN IONS
NONMETALS
RARE GASES
REACTION KINETICS
TOTAL CROSS SECTIONS
VIBRATIONAL STATES