MLZ Conference 2025: Neutrons for Fusion and Nuclear Applications

Session

Session 7

30 Jul 2025, 10:50

Schloss Fürstenried (Munich)

Conveners

Session 7

• Rudolf Neu (MPI for Plasma Physics)

27. A Scanning Positron Microscope for 3D defect mapping

Johannes Mitteneder

30/07/2025, 11:30

Talk

Positron annihilation lifetime spectroscopy (PALS) is a powerful tool for defect investigation at the atomic scale in a wide variety of materials. To investigate inhomogeneous defect distributions with PALS, for example in the vicinity of fatigue cracks or irradiated wall materials, it is necessary to employ a monochromatic pulsed positron beam of variable energy, with a diameter in the range...

26. Neutron and X-ray Diffraction as a Tool to Study High-Temperature Materials for Fusion Applications

Massimo Fritton

30/07/2025, 10:50

Talk

For the fusion of hydrogen isotopes, plasma temperatures of around 100 million °C are required. Although the plasma does not come into direct contact with the reactor walls, the surrounding materials are subjected to extreme thermal loads, high neutron flux, and hydrogen implantation. Consequently, advanced structural materials must be developed to withstand these harsh...

29. Pulsed Low Energy Positron Beams for Fusion Materials

Werner Egger (Universität der Bundeswehr München)

30/07/2025, 11:10

Talk

Pulsed low-energy positron beams of variable energy are powerful tools for non-destructive defect depth profiling of small open volume defects such as vacancies, vacancy-clusters, dislocations, grain boundaries, internal surfaces, and voids in materials relevant to fusion and fission with positron annihilation lifetime spectroscopy (PALS) [1].

The Pulsed Low-Energy Positron System (PLEPS)...