<div class="csl-bib-body">
<div class="csl-entry">Schumm, T. (2025, July 15). <i>Laser Excitation and Precision Spectroscopy of the <sup>2</sup><sup>2</sup><sup>9</sup>Thorium Nuclear Transition</i> [Conference Presentation]. Quantum Sensing Gordon Research Conference, Les Diablerets, Vaud (fr), Switzerland. http://hdl.handle.net/20.500.12708/221297</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/221297
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dc.description.abstract
Among all known isotopes, Thorium-229 has the lowest nuclear excited state, only 8.4 eV above the ground state.
This so-called “isomer” is accessible to VUV laser excitation and a multitude of applications at the interface of atomic and nuclear physics have been proposed, including a nuclear clock, a gamma laser and a sensitive detector for variations of fundamental constants.
After decades of attempts to determine the exact isomer energy and other nuclear properties, we report on two experiments which resonantly excite the isomer by lasers and spectroscopically resolve the nuclear quadrupole splitting in a single crystal environment.
This allows us to determine the sensitivity of the nuclear clock transition to variations of the fine structure constant, which exceeds all schemes involving electron shell transitions by 3 orders of magnitude.
en
dc.language.iso
en
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dc.subject
Thorium-229
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dc.title
Laser Excitation and Precision Spectroscopy of the ²²⁹Thorium Nuclear Transition
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.rights.holder
Schumm Thorsten
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dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.researchTopic.id
M2
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E141-07 - Forschungsbereich Quantum Metrology
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tuw.publication.orgunit
E056-22 - Fachbereich Scies4Free: Semiconductor Integrated Sensors for fundamental research experiments
