Author/Authors :
L. Weissman، نويسنده , , P.A. Lofy، نويسنده , , D.A. Davies، نويسنده , , D.J. Morrissey، نويسنده , , P. Schury، نويسنده , , S. Schwarz، نويسنده , , T. Sun، نويسنده , , G. Bollen، نويسنده ,
Abstract :
The first tests for stopping and extraction of energetic (92 MeV/u), short-lived 38Ca and 37K fragments are reported. The fragments were stopped and thermalized in 50 cm of helium at 1 bar. The ions were transported by electric fields and gas flow and jetted into an expansion chamber through a supersonic nozzle and collected on a metallic foil. The extraction efficiency was measured for different implantation rates and beam degrader thicknesses and compared with the experimental stopping efficiency in the gas cell.
