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- Publications
- Influence
Direct detection of the 229Th nuclear clock transition
- L. Wense, B. Seiferle, +9 authors P. Thirolf
- Physics, Medicine
- Nature
- 5 May 2016
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, which… Expand
Energy of the 229Th nuclear clock transition
- B. Seiferle, L. Wense, +8 authors P. Thirolf
- Physics, Medicine
- Nature
- 10 May 2019
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 the… Expand
Laser spectroscopic characterization of the nuclear-clock isomer 229mTh
- J. Thielking, M. Okhapkin, +6 authors E. Peik
- Physics, Medicine
- Nature
- 15 September 2017
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, but… Expand
Determination of the extraction efficiency for 233U source α-recoil ions from the MLL buffer-gas stopping cell
- L. Wense, B. Seiferle, M. Laatiaoui, P. Thirolf
- Physics
- 6 March 2015
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 are… Expand
Towards a 229Th-Based Nuclear Clock
- L. Wense, B. Seiferle, P. Thirolf
- Computer Science, Physics
- 12 March 2018
TLDR
Fundamental Constants: Improving Our Knowledge on the 229m Thorium Isomer: Toward a Test Bench for Time Variations of Fundamental Constants (Ann. Phys. 5/2019)
- P. Thirolf, B. Seiferle, L. Wense
- Physics
- 1 May 2019
The extraction of 229 Th 3+ from a buffer-gas stopping cell
- L. Wense, B. Seiferle, M. Laatiaoui, P. Thirolf
- Chemistry, Physics
- 1 June 2016
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 isomeric… Expand
The 229-thorium isomer: doorway to the road from the atomic clock to the nuclear clock
- P. Thirolf, B. Seiferle, L. Wense
- Physics
- 25 September 2019
On the Direct Detection of 229m Th
- L. Wense
- Chemistry
- 22 December 2017
Measurements are described that have led to the direct detection of the isomeric first excited state of the thorium-229 nucleus.
Towards a precise determination of the excitation energy of the Thorium nuclear isomer using a magnetic bottle spectrometer
- B. Seiferle, L. Wense, I. Amersdorffer, Nicolas Arlt, Benjamin Kotulski, P. Thirolf
- Physics
- 11 December 2018
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 measured… Expand