  The process of $^{67}$Cu nuclide photoproduction in the zinc dioxide
nanoparticles immersed in the water media was simulated. We calculated the
escape fractions of $^{67}$Cu nuclei and corresponding ranges in water for
nanoparticle sizes from 40 nm to 80 nm and incident photons energies from 12
MeV to 30 MeV. Usage of capturing nanoparticles for accumulation of the escaped
$^{67}$Cu nuclei is also discussed.
