Focused negative ion beam field source

Details Focused negative ion beam field source Focused negative ion beam field source

2011-01-04

2011-01-04

Berman, Jack I (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C250S424000, C250S425000, C250S426000, C250S427000, C250S42300F, C250S42300F

Reexamination Certificate

active

07863581

ABSTRACT:
An apparatus for producing negative ions including an emitter coated with an ionic liquid room-temperature molten salt, an electrode positioned downstream relative to the emitter, a power supply that applies a voltage to the emitter with respect to the electrode. The power supply is sufficient to generate a stable high brightness beam of negative ions having minimal chromatic and spherical aberrations in the beam. An electrostatic lens and deflector is used to focus and direct the beam to a target.

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