SAMOP 2023 – wissenschaftliches Programm

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SYHC: Symposium Precision Physics with Highly Charged Ions

SYHC 2: Intersection of the Electron-Shell and Nuclear Degrees of Freedom

SYHC 2.3: Hauptvortrag

Montag, 6. März 2023, 18:00–18:30, E415

Coupling atomic and nuclear degrees of freedom in highly charged ions — •Adriana Pálffy — Institut für Theoretische Physik und Astrophysik, Universität Würzburg

Nuclear transitions of low energy can couple efficiently to the atomic shell in a variety of processes such as internal conversion, its inverse process nuclear excitation by electron capture or electronic bridge. The talk will illustrate two such examples involving highly charged ions.

First, the talk will follow theoretical developments on employing electronic bridge processes for the driving the nuclear clock transition in ²²⁹Th [1]. This nucleus possesses the lowest known nuclear transition energy and promises a novel and unprecedently precise nuclear clock. The nuclear excited level is a metastable state with energy of 8.19(12) eV, allowing driving with vacuum-ultraviolet lasers. Second, we will discuss recent results for nuclear excitation by electron capture employing electron vortex beams whose wave function has been especially designed and reshaped on demand [2]. On the example of ^93mMo, we show theoretically that the use of tailored electron vortex beams increases the depletion by 4 orders of magnitude compared to the spontaneous nuclear decay of the isomer.

[1] P. V. Bilous et al., Phys. Rev. Lett. 124, 192502 (2020).
[2] Y. Wu et al., Phys. Rev. Lett. 126, 162501 (2022).