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Direct detection of the 229Th nuclear clock transition
The direct detection of this nuclear state of 229mTh is reported, which is further confirmation of the existence of the isomer and lays the foundation for precise studies of its decay parameters. Expand
Laser spectroscopic characterization of the nuclear-clock isomer 229mTh
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
Feasibility study of internal conversion electron spectroscopy of 229mTh
Abstract.With an expected energy of 7.8(5) eV, the isomeric first excited state in 229Th exhibits the lowest excitation energy of all known nuclei. Until today, a value for the excitation energy hasExpand
Energy of the 229Th nuclear clock transition
The method combines nuclear and atomic physics measurements to advance precision metrology, and the findings are expected to facilitate the application of high-resolution laser spectroscopy on nuclei and to enable the development of a nuclear optical clock of unprecedented accuracy. Expand
Lifetime Measurement of the ^{229}Th Nuclear Isomer.
The measurement of the internal-conversion decay half-life of neutral ^{229m}Th has been measured, which is in the range of theoretical predictions and gives further support for an internal conversion coefficient of ≈10^{9}, thus constraining the strength of a radiative branch in the presence of internal conversion. Expand
A Laser Excitation Scheme for ^{229m}Th.
The proposed excitation scheme makes use of already existing laser technology and therefore paves the way for nuclear laser spectroscopy and the recently experimentally observed internal-conversion decay channel of the isomersic state is used for probing the isomeric population. Expand
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 and potential candidates for nuclear clocks other than 229Th are discussed. Expand
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
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
Letter of Intent to the ISOLDE and Neutron Time-of-Flight Committee Characterization of the low-energy
While the existence of a low-energy nuclear isomer in 229Th was suggested from indirect measurements, it is only recently, that the isomer has been firmly identified through the combination ofExpand