Theoretical determination of lifetimes of metastable states in Sc III and Y III

Details Theoretical determination of lifetimes of metastable states in Sc III and Y III Theoretical determination of lifetimes of metastable states in Sc III and Y III

2007-07-22

arxiv.org/abs/0707.3282v1

Physics

Atomic Physics

13 pages, 1 figure and 5 tables

Scientific paper

10.1088/0953-4075/41/5/055702

Lifetimes of the first two metastable states in Sc^{2+} and Y^{2+} are determined using the relativistic coupled-cluster theory. There is a considerable interest in studying the electron correlation effects in these ions as though their electronic configurations are similar to the neutral alkali atoms, their structures are very different from the latter. We have made a comparative study of the correlation trends between the above doubly ionized systems with their corresponding neutral and singly ionized iso-electronic systems. The lifetimes of the excited states of these ions are very important in the field of astrophysics, especially for the study of post-main sequence evolution of the cool giant stars.

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