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Energy of the Th nuclear clock transition
Benedict Seiferle, Lars von der Wense, Pavlo V. Bilous +8
The first nuclear excited state of Th offers the unique opportunity for laser-based optical control of a nucleus. Its exceptional properties allow for the development of a…
X-ray pumping of the Th-229 nuclear clock isomer
Takahiko Masuda, Akihiro Yoshimi, Akira Fujieda +27
Thorium-229 is a unique case in nuclear physics: it presents a metastable first excited state Th-229m, just a few electronvolts above the nuclear ground state. This so-called isome…
Towards an energy measurement of the internal conversion electron in the de-excitation of the Th-229 isomer
Simon Stellmer, Yudai Shigekawa, Veronika Rosecker +5
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 excitatio…
A laser excitation scheme for Th
Lars von der Wense, Benedict Seiferle, Simon Stellmer +4
Direct laser excitation of the lowest known nuclear excited state in Th has been a longstanding objective. It is generally assumed that reaching this goal would require a c…
Nuclear resonant scattering experiment with fast time response: new scheme for observation of Th radiative decay
A. Yoshimi, H. Hara, T. Hiraki +24
Nuclear resonant excitation of the 29.19-keV level in Th with high-brilliance synchrotron- radiation and detection of its decay signal, are proposed with the aim of populat…
Re-evaluation of the Beck et al. data to constrain the energy of the Th-229 isomer
Georgy A. Kazakov, Thorsten Schumm, Simon Stellmer
The presently accepted value of the energy splitting of the Th-229 ground-state doublet has been obtained on the basis of undirect gamma spectroscopy measurements by Beck et al., P…