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Published online by Cambridge University Press: 10 February 2011
Vacancy-type defects in Si crystals introduced by ion implantation have been investigated by an energy-variable positron beam The present paper describes the general feature of point defects induced by ion implantation from the point of view of their dependence on implanted ion species, ion dose, ion energy, implanted targets, thermal after implantation, the presence of oxide overlayers and so on.