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Storage of negative ions at extremely low pressures and temperatures (DESIREE, Stockholm University)

DESIREE (Double ElectroStatic Ion Ring ExpEriment) is a world unique facility for studies of atomic and molecular collisions. Positive and negative ions can here be stored in two storage rings with a common collinear section. The temperature of the facility is 13 K and the pressure is 10-14 mbar. These experimental conditions resembles the properties in the interstellar medium. There are only three cryogenic storage rings globally, and DESIREE is the only double storage ring. From 1st of January 2018 DESIREE is a national infrastructure facility support by the Swedish Research Council, hosted by Stockholm University and operated jointly by Stockholm University, University of Gothenburg and Malmö University. We are using DESIREE to study life times of bound excited states in negative ions and to make precision measurements of electron affinities.

Page Manager: Måns Henningson|Last update: 2/16/2018
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