Insertable target holder for improved stability and performance for solid dopant materials

A target holder, for use with an ion source, comprising:

• a crucible, formed as a cylinder having a hollow interior, a first end and a second end, wherein the first end comprises a porous surface and the second end comprises a tapped hole, and wherein a solid dopant material is configured to be disposed in the hollow interior;
• wherein vapors from the solid dopant material may pass from the hollow interior through the porous surface;
• and
• an end plug, threaded on an outer surface to be screwed into the tapped hole.

A target holder, for use with an ion source, comprising:

• a crucible, formed as a cylinder having a hollow interior, a first end and a second end, wherein the second end is closed, and wherein a solid dopant material is configured to be disposed in the hollow interior and wherein a porous surface is disposed proximate the first end;
• wherein vapors from the solid dopant material may pass from the hollow interior through the porous surface;
• and
• a retention cap disposed proximate the first end.