Excitation of the isomeric ^{229m}Th nuclear state via an electronic bridge process in ^{229}Th^+

Details Excitation of the isomeric ^{229m}Th nuclear state via an electronic bridge process in ^{229}Th^+ Excitation of the isomeric ^{229m}Th nuclear state via an electronic bridge process in ^{229}Th^+

2010-06-16

arxiv.org/abs/1006.3324v1

Phys.Rev.Lett.105:182501,2010

Physics

Atomic Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.105.182501

We consider the excitation of the nuclear transition ^{229g}Th - ^{229m}Th near 7.6 eV in singly ionized thorium via an electronic bridge process. The process relies on the excitation of the electron shell by two laser photons whose sum frequency is equal to the nuclear transition frequency. This scheme allows to determine the nuclear transition frequency with high accuracy. Based on calculations of the electronic level structure of Th^+ which combine the configuration-interaction method and many-body perturbation theory, we estimate that a nuclear excitation rate in the range of 10 s^{-1} can be obtained using conventional laser sources.

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