Nearly complete isobar suppression by photodetachment
Artikel i vetenskaplig tidskrift, 2010

The efficiency of selective suppression of negative ions by photodetachment in a gas-filled radio frequency quadrupole ion cooler was investigated with a new detection method. A neodymium doped yttrium aluminum garnet laser beam at 1064 nm was used to remove Co− ions in the radio frequency quadrupole cooler and the remaining ions were then probed by photodetachment and neutral particle detection. More than 99.99% suppression of the Co− ions was observed. Under identical conditions, only 20% of a Ni− beam was suppressed. The results demonstrate that this isobar suppression technique can lead to nearly complete elimination of certain isobaric contaminants in negative ion beams, opening up new experimental possibilities in nuclear and atomic research and accelerator mass spectrometry.


particle traps

ion beams

atom-photon collisions

electron detachment

negative ions


Pontus Andersson

Göteborgs universitet

Anton Lindahl

Göteborgs universitet

Dag Hanstorp

Göteborgs universitet

Charles Havener

Liu Yuan

Liu Yun

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 107 2 026102 (3 pages)-


Atom- och molekylfysik och optik



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