Browsing by Author "Coleman, P. G."
Now showing items 1-3 of 3
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Re-emission of slow positrons from tungsten at elevated temperatures
Al-Qaradawi, I. Y.; Coleman, P. G. ( Elsevier , 2002 , Conference Paper)A series of measurements have been made on the dependence of the intensity and energy spectrum of slow positrons re-emitted from polycrystalline tungsten foil held at temperatures of up to 500 °C. Irrespective of target ... -
Self-implantation of Cz-Si: Clustering and annealing of defects
Abdulmalik, D. A.; Coleman, P. G.; Al-Qaradawi, I. Y. ( Elsevier , 2006 , Article)Observations of vacancy clusters formed in Czochralski (Cz) Si after high energy ion implantation are reported. Vacancy clusters were created by 2 MeV Si ion implantation of 1 × 10 15 ions/cm 2 and after annealing between ... -
Tests of a diamond field-assisted positron moderator
Al-Qaradawi, I. Y.; Sellin, P. A.; Coleman, P. G. ( Elsevier , 2002 , Conference Paper)Diagnostic studies have been performed on a 70 μm thick diamond film with a view to its development as a possible field-assisted moderator (FAM) for slow positron emission. The film was coated on one side with a 200 nm ...