Lifetimes of negative ions determined in a storage ring
- 1 January 1995
- journal article
- Published by IOP Publishing in Physica Scripta
- Vol. T59, 230-235
- https://doi.org/10.1088/0031-8949/1995/t59/031
Abstract
Accurate lifetime data for metastable, negative atomic or molecular ions are studied to test theoretical predictions for electron-electron correlation. Heavy-ion storage rings can now provide access to experimental studies of autodetachment lifetimes in the ~10 μs–1 s time interval which is otherwise almost inaccessible by traditional beam techniques. The recent lifetime studies of the He−, Be−, Ca−, and He2− ions performed at the storage ring ASTRID are reviewed. Comparisons between the experimental lifetimes and available theoretical predictions exhibit significant deviations. New theoretical studies are needed.Keywords
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