SMI-2023: 14th International Conference on Stopping and Manipulation of Ions and Related Topics

The energy of the first-excited nuclear state of Thorium-229 ($^{229m}$Th) is so low that it can be excited from the ground state by a vacuum ultraviolet laser. One of the applications is a nuclear clock: an atomic clock based on the nuclear transition between the ground state and $^{229m}$Th. An ion trap is an optimal system for the nuclear clock because the quantum states of the $^{229}$Th...

The HITRAP facility, located at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt, Germany, is designed to decelerate, cool and transport heavy, highly charged ions (HCI) created by the GSI accelerator complex to various attached experiments. The system consists of a two-stage deceleration structure, an interdigital H-type linac (IH) and a radio-frequency quadrupole (RFQ),...

Thorium isotopes became of high interest in the search for fundamental physics and for testing of the standard model of particle physics because of their unique nuclear and atomic properties [1,2]. In the project Trapping And Cooling of Thorium Ions via Calcium (𝑇𝐴𝐶𝑇𝐼𝐶𝑎), ion trapping and spectroscopic techniques are developed for a precise determination of nuclear moments, hyperfine...

Neutron-capture cross-sections of radioactive neutron-rich isotopes have a wide impact on nuclear reactions and nuclear structure. They also impact nuclear astrophysics studies. Measurement of these cross-sections is currently considered impossible due to the instability of the targets and projectile.

We propose a method to overcome this limitation. We plan to stop and thermalise fission...