Author/Authors :
Angela Vasilescu، نويسنده , , L. Craciun، نويسنده , , Ionica A. Ghita، نويسنده , , O. Constantinescu and B. Henricot، نويسنده , , F. Constantin، نويسنده , , Catalina Chiojdeanu، نويسنده , , C.N. Zoita، نويسنده , , A. Kiss، نويسنده , , D. Bojin، نويسنده , , P.M. Racolta، نويسنده ,
Abstract :
A new positron gun (PG) will enable high sensitivity measurements in applications of positron annihilation spectroscopy in Romania. Some data concerning the design of a modular system for focussing, transport and acceleration of mono-energetic positrons in the range 0.8–50 keV have been obtained and experimenting on moderators and CDBS was performed. We present a short overview of the present status of the project and preliminary results from Coincidence Doppler Broadening Spectroscopy with a 22NaCl source, on Al samples. The entire positron gun system will be designed as a high-vacuum dedicated extension operating with two options: a 50 mCi 22NaCl source and in-line with the NIPNE cyclotron or a new intense compact cyclotron.
