Nuclear reactions with synthesis of microparticles in hydrogen at a pressure of 3.5 kbar in the presence of tin under irradiation by braking γ-quanta with a threshold energy of 10 MeV

A rod of pure (99.98%) tin that was placed in a hydrogen high-pressure chamber (HHPC) at a pressure of 3.5 kbar was irradiated with braking γ-rays of 10 MeV threshold energy. Upon opening the HHPC, a large number of synthesized microparticles were detached from the reaction chamber walls and spilled out. Detailed studies of the element composition and structure of microparticles and all the internal surfaces of the HHPC components, including the tin rod, have been carried out. It is found that the microparticles can be divided into three parts: banded, loose and compact. As a result of nuclear reactions under the irradiation by braking γ-rays, nuclear reactions took place with the formation of light elements from carbon to medium-mass metals, as well as heavier ones, such as barium. Possible upward (with synthesis of elements from lighter ones) and downstream (with fission of heavier nuclei into lighter elements) nuclear reactions are discussed.