Excitation of Atomic Nickel in the Reaction Between Nickel Carbonyl and Active Nitrogen

摘要

The emission spectrum of the active nitrogen-nickel carbonyl reaction flame between 2300A and 7600A has been measured in a discharge/flow system at pressures between 0.13 and 27 torr. Relative populations and relative rates of formation of excited states of atomic nickel have been calculated, and various effects of reaction conditions and gas composition have been investigated. To the extent testable, the results are consistent with a mechanism in which atomic nickel produced in the reaction is excited by collision with metastable N2(A triplet sigma(u)(+)) molecules in various vibrational levels produced in active nitrogen. The pressure dependence of the atomic nickel spectrum results mainly from changes in the vibrational distribution of the N2(A) molecules. (Author)