THE PRELIMINARY EXPERIMENTS ON LASER ION-SOURCE AT IMP

The experimental results of a study on a laser ion source are presente d in this report. A gain of about five in the total peak current and a n enhanced relative amount of higher charge states were observed when the laser-generated plasma was transported through magnetic bottle fie lds. Radio-frequency discharge was added to the laser ion source, furt her ionizing the primary laser plasma. In this case, the total peak cu rrent increased from 0.46 to 1.4 mA. It is suggested that the laser pl asma can be used in an electron cyclotron resonance source to produce ions of solid elements.