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          Institute: MPI für Kernphysik     Collection: Spectroscopy and Dynamics of Trapped and Stored Ions     Display Documents



ID: 206864.0, MPI für Kernphysik / Spectroscopy and Dynamics of Trapped and Stored Ions
Heavy-ion storage-ring quest for atomic lifetimes in Li+ and Be2+
Authors:Träbert, E.; Gwinner, G.; Knystautas, E.; Wolf, A.
Language:English
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Canadian Journal of Physics
Volume:81
Start Page:941
End Page:952
Copyright:Copyright
National Research Council of Canada
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Decays of metastable levels in the He-like ions Li+ and Be2+ were studied at a heavy-ion storage ring. The lifetimes involved span five orders of magnitude (from 0.5 ms to 50 s) and thus test the performance envelope of the experimental technique. For the 1s2s3S1 level in Be2+ ions, our lifetime result of (1.80 ± 0.05) s agrees with accurate nonrelativistic and relativistic calculations. While theory in these cases is expected to be well developed, experience reflects on the capabilities of the experimental arrangement. The time-resolved observations reveal information on cross sections for collisional de-excitation.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group D. Schwalm/Atomic and Molecular Physics with Stored Ions (A. Wolf)
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