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Direct detection of the 229Th nuclear clock transition
Today’s most precise time and frequency measurements are performed with optical atomic clocks. However, it has been proposed that they could potentially be outperformed by a nuclear clock, whichExpand
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Energy of the 229Th nuclear clock transition
Owing to its low excitation energy and long radiative lifetime, the first excited isomeric state of thorium-229, 229mTh, can be optically controlled by a laser1,2 and is an ideal candidate for theExpand
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Laser spectroscopic characterization of the nuclear-clock isomer 229mTh
The isotope 229Th is the only nucleus known to possess an excited state 229mTh in the energy range of a few electronvolts—a transition energy typical for electrons in the valence shell of atoms, butExpand
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Determination of the extraction efficiency for 233U source α-recoil ions from the MLL buffer-gas stopping cell
Following the α decay of 233U, 229Th recoil ions are shown to be extracted in a significant amount from the MLL buffer-gas stopping cell. The produced recoil ions and subsequent daughter nuclei areExpand
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Towards a 229Th-Based Nuclear Clock
An overview of the current status of the development of a nuclear clock based on the state of lowest known nuclear excitation energy in 229Th is presented. Expand
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The extraction of 229 Th 3+ from a buffer-gas stopping cell
Abstract In the whole landscape of atomic nuclei, 229Th is currently the only known nucleus which could allow for the development of a nuclear-based frequency standard, as it possesses an isomericExpand
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On the Direct Detection of 229m Th
Measurements are described that have led to the direct detection of the isomeric first excited state of the thorium-229 nucleus.
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Towards a precise determination of the excitation energy of the Thorium nuclear isomer using a magnetic bottle spectrometer
Abstract 229Th is the only known nucleus with an excited state that offers the possibility for a direct laser excitation using existing laser technology. Its excitation energy has been measuredExpand
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