Radiant energy – Ion generation – Field ionization type
Reexamination Certificate
2007-11-15
2009-11-17
Wells, Nikita (Department: 2881)
Radiant energy
Ion generation
Field ionization type
C250S424000, C250S42300F, C250S3960ML, C250S3960ML, C250S492210, C315S111810, C315S111410
Reexamination Certificate
active
07619224
ABSTRACT:
A high-brightness, space-charge-dominated circular charged-particle beam system includes a flat circular emitter that emits charge particles to form a space-charge-dominated circular charged-particle beam. The space-charge-dominated circular charged-particle beam is emitted from the flat circular emitter with a uniform density and having a current emission being space-charge-limited, obeying the Child-Langmuir law. A diode includes at least one electrode at the flat circular emitter and at least one additional electrode that accelerates the charged particles. A beam tunnel is coupled electrically to at least one of the additional electrodes. An applied axisymmetric magnetic field focuses the space-charge-dominated circular charged-particle beam. A depressed collector collects the space-charge-dominated circular charged-particle beam.
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Bemis Thomas M.
Bhatt Ronak J.
Chen Chiping
Zhou Jing
Gauthier & Connors LLP
Massachusetts Institute of Technology
Wells Nikita
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