Development of water‐equivalent plastic scintillator doped with zirconium oxide nanoparticles

The effective atomic number of plastic scintillators can be adjusted to match that of water by doping them with high particle number density nanoparticles of less than 10 nm. The precise doping ratio can be determined using empirical formulas and MC simulation. This method enables the development of plastic scintillators equivalent to various human tissues and addresses diverse clinical needs.