Abstract

The loss of atomic nitrogen due to surface and volume reactions in aparallel plate rf reactor was investigated using a pulsed N2 discharge andtwo-photon laser induced fluorescence detection of ground-state atomicnitrogen. Stainless-steel and aluminium electrode surfaces as well as siliconand boron nitride substrates were investigated for their reactivity withatomic nitrogen within the pulsed discharge environment at 1-5 Torr N2.Aluminium was found to have a surface loss rate of three to five times lessthan that of stainless-steel, while boron nitride had the lowest N atomrecombination rate of the materials studied. The N atom recombinationprobability coefficient was found to have an inverse pressure dependence foreach of the materials, with values ranging from 0.5 to 0.02%. The volume lossrate of N atoms was also quantified due to minute O2 impurities introducedinto the pulsed rf N2 discharge.

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