Concentration of radiation displacement defects in BSO and BGO crystals irradiated by electrons or neutrons

Abstract

Abstract:This work is devoted to the calculation of the concentration of radiation displacement defects (RDD) in bismuth germanate and bismuth silicate crystals as a function of particle energy (electrons and neutrons). Energy dependencies of RDD concentrations are discussed in comparison with results for other complex oxide crystals. The obtained results show that for the case of electron irradiation the radiation hardness of BSO and BGO should be similar to other oxide crystals, but for neutrons is drastically smaller. Additionally, for the neutron irradiation, the efficiency of the production of defects in the oxide sublattice is drastically smaller than for other oxide crystals.

Analytical Description of Concentration of Radiation Displacement Defects in Oxide Crystals as Function of Electrons or Neutrons Energy

“…The calculations were performed in the ACCS program [22]. The detailed procedure for the calculation and determination of the cascade functions was described in [22,23].…”

“…The threshold displacement energy (Td) values for ions taken from [1,[23][24][25][26] are given in Table 1. The Td values for ions in the YAP structure were assumed to be equal to the values for YAG atoms.…”