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A: Fachverband Atomphysik
A 20: Precision spectroscopy of atoms and ions III
A 20.2: Vortrag
Mittwoch, 11. März 2020, 14:30–14:45, f303
Identification of clock transitions in highly charged ions by Penning-trap mass spectrometry — •R. X. Schüssler1, H. Bekker1, M. Braß2, H. Cakir1, J. R. Crespo López-Urrutia1, M. Door1, P. Filianin1, Z. Harman1, M. Haverkort1, W. Huang1, P. Indelicato3, C. H. Keitel1, C. M. König1, K. Kromer1, Yu. N. Novikov4, A. Rischka1, Ch. Schweiger1, S. Sturm1, S. Ulmer5, S. Eliseev1, and K. Blaum1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Intitute for Theoretical Physics, Heidelberg University, Germany — 3Laboratoire Kastler Brossel, Sorbonne Université, Paris, France — 4Petersburg Nuclear Physics Institute, Gatchina, Russia — 5RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
Promising candidates for a new generation of clocks are transitions in highly charged ions (HCIs), as, due to their compact size, they are less sensitive to external perturbations. Insufficiently accurate atomic structure calculations often hinder the identification of suitable transitions in HCIs. High-precision Penning-trap mass spectrometry can be used to identify transitions of long-lived metastable states by determining the mass difference of the excited and ground state. Reaching uncertainties of mass-ratio measurements on the level of δ m/m≤ 10−11 or better, the Pentatrap experiment, synchronously operating five Penning traps, is able to identify long-lived metastable states in HCIs with a few eV uncertainty. The talk will cover the first such transition found in 187Re29+ and plans for future measurements at Pentatrap.