Purification of Radioactive Ion Beams by Photodetachment in a RF Quadrupole Ion Beam Cooler

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Thomas Lewis, Assistant Professor (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site: http://library.uncg.edu/

Abstract: A highly efficient method for suppressing isobar contaminants in negative radioactive ion beams by photodetachment is demonstrated. A laser beam having the appropriate photon energy is used to selectively neutralize the contaminants. The efficiency of photodetachment can be substantially improved when the laser-ion interaction takes place inside a radio frequency quadrupole ion cooler. In off-line experiments with ion beams of stable isotopes, more than 99.9% suppression of Co-, S-, and O- ions has been demonstrated while under the identical conditions only 22% reduction in Ni- and no reduction in Cl- and F- ions were observed. This technique is being developed for on-line purification of a number of interesting radioactive beams, such as 56Ni, 17,18F, and 33,36Cl.

Additional Information

AIP Conference Proceedings 1097, pp. 431-442. 2009
Language: English
Date: 2009
Photodetachment, isobar suppression, buffer gas cooling, RF quadrupole ion guide

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