An autofocusing system for nuclear microprobes—based on real-time image processing and numerical optimizationDimitrios Papaioannou, Gyula Nagy, Daniel Primetzhofer and Robert J. W. FrostEur. Phys. J. Plus, 140 6 (2025) 585DOI: https://doi.org/10.1140/epjp/s13360-025-06493-9