| Zugriffsnummer | 40281 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Laser spectroscopic characterization of the nuclear-clock isomer 229mTh |
| Autor(in); Institution |
Thielking, Johannes; 4.4, Zeit und Frequenz, PTB-Braunschweig
Okhapkin, Maxim V.; 4.4, Zeit und Frequenz, PTB-Braunschweig
Glowacki, Przemyslaw; 4.4, Zeit und Frequenz, PTB-Braunschweig; Poznan University of Technology, Poznan, POLAND
Meier, David M.; 4.4, Zeit und Frequenz, PTB-Braunschweig
von der Wense, Lars; Ludwig-Maximilians-Universität München, Garching, GERMANY
Seiferle, Benedict; Ludwig-Maximilians-Universität München, Garching, GERMANY
Düllmann, Christoph E.; GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GERMANY; Helmholtz-Institut Mainz, Mainz, GERMANY; Johannes Gutenberg-Universität, Mainz, GERMANY
Thirolf, Peter G.; Ludwig-Maximilians-Universität München, Garching, GERMANY
Peik, Ekkehard; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | Nature: 556 (2018), 321 - 325 |
| ISSN | 0028-0836 (PRINT) ; 1476-4687 (ONLINE) |
| DOI | |
| Verlag | London: Nature Publishing Group |
| Freie Schlagworte | nuclear clocks ; nuclear-clock isomer 229mTh ; hyperfine structure |
| Zusammenfassung | 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 about four orders of magnitude lower than typical nuclear excitation energies. Of the many applications that have been proposed for this nuclear system, which is accessible by optical methods, the most promising is a highly precise nuclear clock that outperforms existing atomic timekeepers. Here we present 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. Following the recent direct detection of this long-sought isomer, we provide detailed insight into its nuclear structure and present a method for its non-destructive optical detection. |
Zitierung
Thielking, J., Okhapkin, M. V., Glowacki, P., Meier, D. M., von der Wense, L., Seiferle, B., Düllmann, C. E., Thirolf, P. G., & Peik, E. (2018). Laser spectroscopic characterization of the nuclear-clock isomer 229mTh. Nature, 556, 321–325. https://doi.org/10.1038/s41586-018-0011-8