Formation of the ${}^{178m2}$Hf isomer in a natural mixture of hafnium isotopes irradiated by an intense $\gamma$ quantum beam (experiment)

The results of an experiment on the production of the ${}^{178m2}$Hf isotope by exposing a natural mixture of hafnium isotopes to an intense bremsstrahlung beam are reported. The sample under investigation was exposed to an electron beam with an energy of 30 MeV and current 200 μ A for 500 h. The spectrometric analysis of the irradiated sample using radiochemical methods for the separation of isotopes did not reveal ${}^{178m2}$Hf lines.