The proposed INEL intense slow positron source, beam line, and positron microscope facility

Summary form only given. A program is underway at the Idaho National Engineering Laboratory (INEL) to design and construct an intense slow positron beam facility with an associated positron microscope. The goal of the INEL positron beam is /spl ges/ 10/sup 12/ slow e/sup +//s over a 0.03 cm diameter, which represents a 10/sup 3/ to 10/sup 4/ advancement in beam current over existing beam facilities. A design using /sup 58/Co with moderators and remoderators in conjunction with electrostatic positron beam optics has been achieved after numerous computer code studies. Proof-of-principle electron tests have demonstrated the feasibility of the large-area source focusing optics. Such a beam facility and associated intense slow positron source can also be used for the generation and study of positron, and positron electron plasmas at /spl les//sup 14/ particles/cm/sup 3/, with plasma temperatures ranging from an eV to many keV, as well as an intense X-ray source via positron channeling radiation.