High-efficiency target ion sources for radioactive ion beam generation

G. D. Alton, Y. Liu, D. W. Stracener

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Abstract

In this report, high-temperature ion sources are described, which have demonstrated the high ionization efficiency, species versatility, and operational reliability required at isotope-separator-online (ISOL) based radioactive ion beam facilities such as the Holifield Radioactive Ion Beam Facility (HRIBF). Specific attention is given to the ion optics, operational parameters, thermal transport properties, emittances, and ionization efficiencies of the HRIBF ion sources that have been carefully designed for safe handling in the high-level radiation fields incumbent at such facilities. Included in the article are descriptions and performance data for high-temperature, positive- (electron impact and surface ionization) and negative- (kinetic ejection and surface ionization) ion sources as well as low-temperature, batch-mode negative-ion sources, developed for processing long-lived isotopes that have been the principal contributors to recent successes held at the Holifield Radioactive Ion Beam Facility.

Original languageEnglish
Article number03A711
JournalReview of Scientific Instruments
Volume77
Issue number3
DOIs
StatePublished - Mar 2006

Funding

The authors express their appreciation to students, visiting scientists, and all members of the HRIBF staff whose dedicated efforts have made possible the implementation of the HRIBF and the successes realized during the past few years. Research at the Oak Ridge National Laboratory is supported by the U.S. Department of Energy under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.

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