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Current Lectures and Seminars

This page provides the current lectures and seminars by the "Stored and Cooled Ions" Division. According to the research fields of the division the course offerings concentrate on Atomic Physics and Quantum Physics.


Current Seminars

Mandatory Seminar, SS24: Key experiments in quantum science

Prof. Dr. K. Blaum, Apl. Prof. Dr. J. R. Crespo López-Urrutia, Jun.-Prof. Dr. S. Degenkolb

Thursdays 16:00 - 18:00, INF 227 02.402
Next seminar: 20.06.2024, 16:00

heiCO | PhÜ


Advanced seminar, SS24: Physics with stored and cooled ions

Prof. Dr. Klaus Blaum, PD Dr. Holger Kreckel, PD Dr. Sven Sturm

Usually every fortnight, Wednesday 15:00, Central Seminar Room.
Current dates and information can be found here.

Next seminar: 26.06.2024, 15:00
Dr. Frank Wienholtz, Institute for Nuclear Physics, TU Darmstadt
Probing the surface of atomic nuclei with antiprotons
The main goal of the PUMA [1] (antiProton Unstable Matter Annihilation) experiment is to use antiprotons as a tool to investigate the matter density of short-lived nuclei. For this, antiprotons produced at the Antiproton Decelerator (AD) facility at CERN and decelerated by the Extra Low Energy Antiproton storage ring (ELENA) will be captured, cooled and transported to the ISODLE facility at CERN where the antiprotons will be mixed with short lived isotopes. During this process, an antiproton can be captured by the nucleus and will subsequently annihilate with a neutron or a proton at the surface of the nucleus itself. The pionic fingerprint of this annihilation will be measured using a time-projection-chamber. With this knowledge, the ratio of protons to neutrons on the outermost part of the nuclei distribution can be determined and phenomena like neutron or proton halos or neutron or proton skins can be investigated. An overview of the PUMA experiment will be given, the current status will be discussed and some of the main physics goals will be highlighted.
[1] Aumann et al., Eur. Phys. J. A 58, 88 (2022)