Ion source for an ion implanter
First Claim
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1. An ion source for an ion implanter, comprising:
- a housing having an orifice at one end, and having a removable cap;
a graphite crucible disposed within said housing, said crucible having a hollow interior for holding an ion source metal, having a channel formed into and along the side of the crucible, and having a hole for providing fluid communication between the interior and exterior of said crucible, said hole positioned above a portion of the interior in which the ion source metal is to be held, and said hole also positioned within said channel so that the interior of said crucible is in fluid communication with said orifice through said hole and along the side of said crucible in said channel, said crucible removable from said housing when said removable cap is removed therefrom; and
a heater assembly for heating said crucible to a temperature at which said ion source metal will produce a vapor.
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Accused Products
Abstract
An ion source of a type used on ion implanters which includes a crucible having a hollow interior and a hole for providing fluid communication between the interior of and exterior to the crucible. A heater assembly is used for adjustably heating the crucible. The crucible hole is if fluid communication with a passageway down the crucible and with a vapor nozzle aperture. An arc chamber has an inlet positioned at the output of the vapor nozzle aperture. The material to be vaporized does not bond to the crucible interior when solidified from a liquid state.
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Citations
7 Claims
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1. An ion source for an ion implanter, comprising:
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a housing having an orifice at one end, and having a removable cap; a graphite crucible disposed within said housing, said crucible having a hollow interior for holding an ion source metal, having a channel formed into and along the side of the crucible, and having a hole for providing fluid communication between the interior and exterior of said crucible, said hole positioned above a portion of the interior in which the ion source metal is to be held, and said hole also positioned within said channel so that the interior of said crucible is in fluid communication with said orifice through said hole and along the side of said crucible in said channel, said crucible removable from said housing when said removable cap is removed therefrom; and a heater assembly for heating said crucible to a temperature at which said ion source metal will produce a vapor. - View Dependent Claims (2)
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3. An antimony ion source for an ion implanter, comprising:
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a housing having an orifice at one end, and having a removable cap at another end; a graphite crucible disposed within said housing, said crucible having a hollow interior for holding antimony source metal, having a plurality of holes for providing fluid communication between the interior and exterior of said crucible and having a plurality of channels formed on and along an exterior surface of said crucible each of said plurality of holes positioned above the a portion of the interior in which the antimony source metal is to be held and said hole also positioned within one of said channels so that the interior of said crucible is in fluid communication with said orifice through each of said plurality of holes and along the exterior surface of said crucible in corresponding ones of said plurality of channels, said crucible removable from said housing when said removable cap is removed therefrom; and a heater assembly disposed around said crucible, for heating said crucible to a temperature at which antimony vaporizes - View Dependent Claims (4, 5, 6, 7)
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Specification