Transport Experiments with Neutralized and Space Charge Dominated Deneutralized 2 mA 80 keV Xe Beams

The Argonne National Laboratory Ion Beam Fusion group is presently studying the transport and charge neutralization of beams of heavy ions using a small PDPE (Penning Discharge Pierce Extraction) ion source. This source is a scaled down version of the high current high brightness source of the 1.5 MeV Heavy Ion Preaccelerator. Both sources were developed by Hughes Research Laboratories. This report gives results obtained with a low vacuum system (up to 5 × 10-7 torr static vacuum) and an 80 keV dc Xe+1 beam. The emphasis of these measurements was on neutralization times and space charge blow up of the beam.