EPJ D Topical Issue - Electron and positron interactions and their applications: a tribute to Professor Michael Brunger
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- Published on 21 March 2025
Guest editors: Márcio Henrique Franco Bettega, Stephen Buckman, Dragana Maric, Sylwia Ptasinska, Ron White
The Topical issue "Electron and Positron Interactions and Their Applications" is a collection of 27 scientific contributions that honor the exceptional scientific career of our colleague, friend, and collaborator the late Professor Michael James Brunger. The contributions that have been published in this volume are related to the recent state-of-art experimental and theoretical developments and applications in the field of Atomic and Molecular Physics, which include electron, positron, positronium, and photon interactions with atoms, molecules, and crystals. This topical issue received contributions from more than eighty authors and co-authors from sixteen different countries and/or affiliated institutions. Professor Michael J. Brunger was co-author in two of these contributions. Processes such as elastic and electronic inelastic collisions, ionization, and dissociative electron attachment were investigated by different experiments and theoretical methods covering applications in biology, plasma physics, and atmospheric science.
All articles are available here and are freely accessible until 18 May 2025. For further information read the Editorial.
EPJ E Highlight - Understanding arrangements of suspended particles in reversing flows
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- Published on 13 March 2025
Experiments reveal new insights into how suspended particles rearrange themselves when the flow direction of their suspending fluid is reversed
When particles are suspended in viscous fluids of the same density, their distribution becomes uneven as the fluid is subjected to straining flows. This affects the suspension’s viscosity, especially during flow reversals. Yet although this behaviour is well understood in steady, uniform flows, less is known about how the microstructures of fluid suspensions will evolve in more complex scenarios.
Through new experiments detailed in EPJ E, a team led by Irene Ippolito at the University of Buenos Aires and Georges Gauthier at the University of Paris-Saclay have uncovered new insights into this evolving structure when a suspension’s flow direction is periodically reversed within a narrow gap.
EPJ B Highlight - Exploring the high-temperature performance of cadmium chalcogenides
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- Published on 13 March 2025
Through a combination of experimental and theoretical analysis, researchers have gained new insights into the thermal stability and degradation of cadmium chalcogenides at high temperatures.
Cadmium chalcogenides are an important family of materials in which cadmium (Cd) forms a chemical compound with either tellurium (Te), selenium (Se), or sulphur (S). These materials are known for their useful electronic properties, as well as their strong thermal stability and high natural abundance. Yet despite these useful properties, researchers still have much to learn about how cadmium chalcogenides perform at the high temperatures required for many practical applications
Through new analysis published in EPJ B, researchers led by Zalak Kachhia at Sarder Patel University, India, present a detailed exploration of the thermal properties of cadmium chalcogenides, revealing new insights into how these materials degrade above certain temperature limits.
