Coherence-enhanced optical determination of the TH229 isomeric transition

Wen Te Liao, Sumanta Das, Christoph H. Keitel, Adriana Pálffy

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The impact of coherent light propagation on the excitation and fluorescence of thorium nuclei in a crystal lattice environment is investigated theoretically. We find that in the forward direction, the fluorescence signal exhibits characteristic intensity modulations dominated by a sped-up initial decay signal that is orders of magnitude faster. This feature can be exploited for the optical determination of the isomeric transition energy. In order to obtain a unmistakable signature of the isomeric nuclear fluorescence, we put forward a novel scheme for the direct measurement of the transition energy via electromagnetically modified nuclear forward scattering involving two fields that couple to three nuclear states.

Original languageEnglish
Article number262502
JournalPhysical Review Letters
Issue number26
StatePublished - 28 Dec 2012


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