Radiant energy – Ion generation – Field ionization type
Reexamination Certificate
2006-09-15
2010-10-12
Berman, Jack I (Department: 2881)
Radiant energy
Ion generation
Field ionization type
C250S427000, C250S492210, C315S111810, C315S111710
Reexamination Certificate
active
07812320
ABSTRACT:
An ion source element, an ion implanter having the ion source element and a method of modifying the ion source element are provided. In the ion source element, a chamber may have a cavity divided into a plurality of inner sections configured substantially perpendicularly to an axis defined through centers of ends of the cavity. The larger inner sections may be at, or near, a center of the cavity and become smaller toward the ends of the cavity. A filament may be disposed at one end of the chamber to emit thermal electrons. A repeller may extend into the chamber through the other end of the chamber. An inlet may be formed in a first cavity wall to introduce gas having a dopant species into the chamber. A beam slit may be formed in a second cavity wall, opposite the inlet, of the chamber to extract an ionized species of the gas from the chamber.
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Bae Do-in
Kim Seong-gu
Yang Jong-hyun
Yun Su-han
Berman Jack I
Harness & Dickey & Pierce P.L.C.
Sahu Meenakshi S
Samsung Electronics Co,. Ltd.
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