Importance of track density for radiolytic reactions: changes in yields of OH radical molecular probe under protons around the Bragg peakTamon Kusumoto, Yu Okazaki, Taisei Mamiya, Masakazu Oikawa and Teruaki KonishiEur. Phys. J. Plus, 140 5 (2025) 445DOI: https://doi.org/10.1140/epjp/s13360-025-06391-0