Photo-Induced Quenching of the 229Th Isomer in a Solid-State Host

A. N. Alexandrova; Andrei Derevianko; Eric R. Hudson; H. B. Tran Tan; H. W. T. Morgan; J. E. S. Terhune; R. Elwell; U. C. Perera

arxiv: 2412.08998 · v1 · pith:VO5M2MHH · submitted 2024-12-12 · physics.atom-ph · nucl-ex

Photo-Induced Quenching of the 229Th Isomer in a Solid-State Host

J. E. S. Terhune , R. Elwell , H. B. Tran Tan , U. C. Perera , H. W. T. Morgan , A. N. Alexandrova , Andrei Derevianko , Eric R. Hudson This is my paper

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classification physics.atom-ph nucl-ex

keywords processcross-sectiondecayhostisomericmeasuredphotoquenchingsolid-state

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The population dynamics of the 229Th isomeric state is studied in a solid-state host under laser illumination. A photoquenching process is observed, where off-resonant vacuum-ultraviolet (VUV) radiation leads to relaxation of the isomeric state. The cross-section for this photoquenching process is measured and a model for the decay process, where photoexcitation of electronic states within the material bandgap opens an internal conversion decay channel, is presented and appears to reproduce the measured cross-section.

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Photo-Induced Quenching of the 229Th Isomer in a Solid-State Host

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