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Author Welton, R. F. ♦ Piotrowski, A. ♦ Alton, G. D. ♦ Murray, S. N.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PARTICLE ACCELERATORS ♦ ION SOURCES ♦ DIFFUSION ♦ RADIOACTIVE ION BEAMS ♦ RARE GASES ♦ HYDROGEN ♦ OXYGEN ♦ NITROGEN ♦ NITROGEN OXIDES ♦ CARBON OXIDES ♦ HIGH-FREQUENCY DISCHARGES ♦ TIME DELAY ♦ DISSOCIATION
Abstract A rf ion source is presently being developed and evaluated as a potential candidate for use in generating radioactive ion beams (RIBs) for the experimental research program at the Holifield Radioactive Ion Beam Facility (HRIBF) now under construction at the Oak Ridge National Laboratory. For this application, any time delays that are excessively long with respect to the half-life of the radioactive species of interest can result in significant losses of the RIB intensity; therefore the times for effusive flow through the ion source are of fundamental importance since they set limits on the minimum half-life of radioactive species that can be processed in the source. Complementary experimental and computational techniques have been developed which can be used to determine the characteristic delay times for gaseous species in low-pressure ion source assemblies. These techniques are used to characterize the effusive delay times for the stable counterparts of various atomic and molecular radioactive species in the ORNL-rf source: He, Ne, Ar, Kr, Xe, H{sub 2}, CO, CO{sub 2}, N{sub 2}, N{sub 2}O, and O{sub 2}. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Department Oak Ridge National Laboratory
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 67
Issue Number 3
Technical Publication No. CONF-9509125-
Organization Oak Ridge National Laboratory


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