PHYSICS OF MULTIPLY CHARGED OXYGEN IN THE CONSTANCE B QUADRUPOLE MIRROR

C. C. PETTY, D. L. GOODMAN, D. K. SMITH, D. L. SMATLAK
1989 Le Journal de Physique Colloques  
Detailed experimental measarements of multiply-charged ion densities, endloss currents, and temperatures have been made in a single cell quadrupole mirror. The purpose of these experiments is to determine the confinement physics of ions over a range of charge states in an ECR ion source. The parallel ion confinement times agree well with a theoretical model including Pastukhov and flow confinement for a potential dip of 4;/Ti -. 1. The ion endloss currents were found to be up to 50% hollow.
more » ... to 50% hollow. Radial transport of ions'was found to be important in limiting the extraction of high charge state ions. In addition, by heating 04+ with ion cyclotron resonance heating we were able to increase its extracted current in the plasma center by 25%.
doi:10.1051/jphyscol:1989184 fatcat:q3rxm6zc4vhafhxtxpyghvllja