# Nuclear laser spectroscopy of the 3.5 eV transition in Th-229

@article{Peik2003NuclearLS,
title={Nuclear laser spectroscopy of the 3.5 eV transition in Th-229},
author={Ekkehard Peik and Chr. Tamm},
journal={EPL},
year={2003},
volume={61},
pages={181-186}
}
• Published 2003
• Materials Science
• EPL
We propose high-resolution laser spectroscopy of the 3.5 eV nuclear transition in Th-229 in isolated atoms. Laser excitation of the nucleus can be detected efficiently in a double-resonance method by probing the hyperfine structure of a transition in the electron shell. It is shown that for a suitably chosen electronic level, the frequency of the nuclear transition is independent of external magnetic fields to first order and of electric fields to second order. This makes Th-229 a possible… Expand
202 Citations

#### Paper Mentions

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An alternative method to determine the excitation energy of the $~^{229\rm{m}}\rm{Th}$ isomer via the laser-induced electronic bridge is investigated theoretically. In the presence of an optical orExpand
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Experiments Towards Optical Nuclear Spectroscopy With Thorium-229
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The discovery of the low-lying isomeric nuclear state of Th at 7.6 ± 0.5 eV above the ground state opened a new field of research as a bridge between nuclear and atomic physics. Since indirectExpand
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The 229Th nucleus has an isomeric state at an energy of about 8 eV above the ground state, several orders of magnitude lower than typical nuclear excitation energies. This has inspired theExpand
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The first excited isomeric state of Th-229 has an exceptionally low energy of only a few eV and could form the gateway to high-precision laser spectroscopy of nuclei. The excitation energy of theExpand
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The laser spectroscopic investigation of the hyperfine structure of the doubly charged 229mTh ion and the determination of the fundamental nuclear properties of the isomer, namely, its magnetic dipole and electric quadrupole moments, as well as its nuclear charge radius are presented. Expand
Optical spectroscopy of an atomic nucleus: Progress toward direct observation of the 229Th isomer transition
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