科研之友
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摘要
Microplasma jets have been generated in double parabolic microcavities arranged in an hourglass structure with a 300-mu m-diameter throat. Fabricated by micropowder blasting of nanoporous alumina grown on Al foil, the parabolic cavities are situated back-to-back and operated with a feedstock gas having a flow rate of similar to 1.5-6 standard L/min. Arrays as large as 6 x 6 jets have been demonstrated for which the jet pitch and fill factor are 1.25 mm and 17%, respectively. Images of the visible fluorescence produced by the expansion of He microplasma jets in laboratory air provide a vivid picture of the extent of the He(2(3)S) -> N-2(+) Penning ionization reaction zone.
- 出版日期2011-11
