Formation of short-lived radioactive isotopes in soil by hadrons with energies to 50-GeV

The formation of short-lived ..gamma..-active isotopes (5 min less than T/sub /sup 1///sub 2// less than 7 days) was studied in three types of soil (sand, loam, and clay), which were sampled at an accelerator construction site and irradiated by secondary particles generated in a target at the Serpukhov proton synchrotron. The ..gamma..-ray spectra were determined in the energy range 160 to 1400 keV. Theoretical estimates of the induced activity in soil were made in addition to the experimental studies.