Ion generator

Details Ion generator Ion generator

2006-07-27

2008-10-28

Wells, Nikita (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C250S426000, C250S427000, C250S42300F

Reexamination Certificate

active

07442941

ABSTRACT:
An ion generator (10) generally includes: a shielding shell (11), a cathode device (16), and an annular anode (14). The shielding shell has a first end (113), an opposite second end (115) and a main body (111) therebetween. The first end has an electron-input hole (13). The second end has an ion-output hole (15). The main body has a gas inlet (170) for introducing an ionizable gas (170). The cathode device faces the electron-input hole for emitting electrons to enter the shielding shell so as to ionize the ionizable gas thereby generating ions. The cathode device includes a conductive base (160) and at least one field emitter (161) thereon. The annular anode is arranged in the shielding shell. The anode is aligned with the ion-output hole.

REFERENCES:
patent: 5166709 (1992-11-01), Kubelik

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