Open AccessPhotodetachment Studies of Ir− Ions at DESIREE
Author(s) -
M. K. Kristiansson,
J Sundberg,
Dag Hanstorp,
Gustav Eklund,
H. Cederquist,
Henning Zettergren,
H. T. Schmidt
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/13/132022
Subject(s) - metastability , storage ring , ion , atomic physics , iridium , range (aeronautics) , millisecond , relaxation (psychology) , physics , chemistry , beam (structure) , materials science , optics , astronomy , composite material , catalysis , psychology , social psychology , biochemistry , quantum mechanics
Synopsis Anions of iridium were stored in the cryogenic storage ring, DESIREE [1, 2, 3] and investigated using laser photodetachment. The ions were stored for up to 2000 seconds and the relaxation of several metastable states were studied by selecting different photon energies. The threshold of the previously not observed 3 P 2 level is located and the lifetime of this sate is found to be longer than the storage time of the ion beam. We also find that a state exists higher in energy than the previously known level with a lifetime in the range of hundreds of milliseconds.