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- W333814694 abstract "Measurement of the charge transfer cross section for the process N/sup +/ + O yields N + O/sup +/ was completed during the contract year. The experiment was conducted using a crossed beam apparatus. The O atoms were formed in a microwave or rf discharge using pure O/sub 2/ with traces of H/sub 2/O present. Varying the amount of H/sub 2/O present allowed the dissocation fraction in the O/sub 2/ to the varied. This variation was needed to allow determination of the effects of other competing processes. The cross section for the above reaction was determined in the energy range from 0.5 eV to 12 eV in the center-of-mass system. The signals obtained indicated that this process does not vary rapidly with energy. The cross section was determined to be 1.2 x 10/sup -17/ cm/sup 2/ at the lowest energies studied and increases to approximately 2.5 x 10/sup -17/ cm/sup 2/ at 12 eV in the center-of-mass. Cross sections for the reactions Al/sup +/ + O/sub 2/ yields AlO/sup +/ + O and Al + O/sub 2//sup +/ and Al/sup +/ + N/sub 2/ yields AlN/sup +/ + N and Al + N/sub 2//sup +/ were measured during the contractmore » period. The values determined for these processes were essentially the same as those measured previously. In addition, the upper limits determined at energies where these processes have very small probabilities were pushed to lower values. The measurements were undertaken to resolve a conflict between our data and cross section values postulated to explain results obtained in another experiment.« less" @default.
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- W333814694 date "1978-11-01" @default.
- W333814694 modified "2023-09-27" @default.
- W333814694 title "Measurements of selected charge transfer processes at low energies. Final report, November 1977-November 1978" @default.
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