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4 papers
On an attempt to optically excite the nuclear isomer in Th-229
Simon Stellmer, Georgy Kazakov, Matthias Schreitl +3
We aim to perform direct optical spectroscopy of the Th-229 nuclear isomer to measure its energy and lifetime, and to demonstrate optical coupling to the nucleus. To this end, we d…
Measuring the Th-229 nuclear isomer transition with U-233 doped crystals
Simon Stellmer, Matthias Schreitl, Georgy Kazakov +2
We propose a simple approach to measure the energy of the few-eV isomeric state in Th-229. To this end, U-229 nuclei are doped into VUV-transparent crystals, where they undergo alp…
Radioluminescence and photoluminescence of Th:CaF crystals
Simon Stellmer, Matthias Schreitl, Thorsten Schumm
We study thorium-doped CaF crystals as a possible platform for optical spectroscopy of the Th-229 nuclear isomer transition. We anticipate two major sources of background signa…
Relaxation and Pre-thermalization in an Isolated Quantum System
Michael Gring, Maximilian Kuhnert, Tim Langen +7
Understanding relaxation processes is an important unsolved problem in many areas of physics. A key challenge in studying such non-equilibrium dynamics is the scarcity of experimen…