TY - JOUR
T1 - Performance characterization studies of a flat field volume ECR ion source
AU - Liu, Y.
AU - Bilheux, H.
AU - Kawai, Y.
AU - Meyer, F. W.
AU - Alton, G. D.
PY - 2005/12
Y1 - 2005/12
N2 - An all-permanent-magnet, 6 GHz ECR ion source with a central flat magnetic field profile has been evaluated at the Holifield Radioactive Ion Beam Facility, Oak Ridge National Laboratory. This magnetic field configuration produces a large volume ECR zone when the input RF radiation is tuned in resonance with the central flat field, thereby increasing the probability for absorption of microwave power and, consequently, the hot electron population in the plasma volume. The magnetic field of the source can also be converted from the flat-B configuration to the traditional minimum-B configuration and vice versa. The studies show that the volume ECR configuration produced higher charge states and higher intensities for high charge states than the conventional minimum-B configuration.
AB - An all-permanent-magnet, 6 GHz ECR ion source with a central flat magnetic field profile has been evaluated at the Holifield Radioactive Ion Beam Facility, Oak Ridge National Laboratory. This magnetic field configuration produces a large volume ECR zone when the input RF radiation is tuned in resonance with the central flat field, thereby increasing the probability for absorption of microwave power and, consequently, the hot electron population in the plasma volume. The magnetic field of the source can also be converted from the flat-B configuration to the traditional minimum-B configuration and vice versa. The studies show that the volume ECR configuration produced higher charge states and higher intensities for high charge states than the conventional minimum-B configuration.
KW - ECR ion source
KW - Flat-B configuration
KW - Multi-charged ions
UR - http://www.scopus.com/inward/record.url?scp=28044437518&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2005.07.155
DO - 10.1016/j.nimb.2005.07.155
M3 - Article
AN - SCOPUS:28044437518
SN - 0168-583X
VL - 241
SP - 965
EP - 970
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-4
ER -