Investigation of Ion-ion Recombination Cross Sections.
Final technical rept. 19 Oct 71-18 Oct 74,
STANFORD RESEARCH INST MENLO PARK CALIF MOLECULAR PHYSICS CENTER
Pagination or Media Count:
An experimental and theoretical investigation of ion-ion mutual neutralization was made. Two-body neutralization rates were measured for NO O2-, N2 NO2-, and N O- over the energy range from above 10 eV to 0.15 eV, and the results extrapolated and thermally averaged to yield reaction rates at 300K. In addition, preliminary measurements were obtained on O OH- and NO OH--H2O, and a few data obtained on N2 OH--H2O. An investigation of excited states in ion beams did not reveal the presence of any such states, but did allow measurements of electron loss cross sections for O-, O2-, NO2- and NO3- on a variety of atoms and molecules at energies from 1 to 4 keV. The theoretical program has been directed toward understanding the processes by which clustered ions are neutralized. The most favorable process is orbital capture of one ion by the other due to coulomb excitation of the internal degrees of freedom of the clusters. A variety of calculations were performed on the neutralization of NO by O-.
- Atmospheric Physics
- Atomic and Molecular Physics and Spectroscopy