Effects of adiabatic focusing and free-escape boundaries in coronal shock accelerationLidiya Annie John, Seve Nyberg, Laura Vuorinen, Rami Vainio, Alexandr Afanasiev, Stefaan Poedts and Nicolas WijsenJ. Space Weather Space Clim., 14 (2024) 15DOI: https://doi.org/10.1051/swsc/2024012