Production of ions by electrohydrodynamic spraying techniques.

摘要: T electrical atomization or spraying of liquids in vacua has been studied extensively since 1959 as a source charged heavy particles for electric propulsion systems. In 1962, Krohn sprayed high-conductivity and produced simultaneously both ions particles. It reported recently that, under the appropriate conditions, spray will produce only by field emission from surface parent fluid. A sufficiently strong applied to surface, such direction make positive, produces an positive ions. If originate adsorbed layer are emitter material itself, ion may be weak rapidly exhausted. Muller steady currents microampere range supplying ionizable matter gaseous phase. this Note we shall describe electrohydrodynamic (EHD) techniques which can utilized supply liquid phase hence working All experimental work was performed vacuum 10~ torr maintained 6-in. oil diffusion pump. The originated at tip stainless-steel capillary tube held high d.c. potential relative coaxial, grounded, planar electrode shown Fig. 1. thus region intensity could controlled varying difference. requisite voltage highly regulated 30 kv supply. fluid stored standard medical syringe inside system forced through displacement feed that pushed on plunger (Fig. 1). initiated following procedure. allowed run until hemisphere