Volume 4, 2020



J. F. Facetti-Masulli, H. D. Colman

Pages: 106-108

DOI: 10.21175/RadProc.2020.22

The distribution of valence states III and V of radioactive 76As after neutron irradiations of thioarsenic compounds has been investigated in arsenic sulphides, optical glasses materials. Compounds were irradiated with neutrons at a flux of 1012 n cm-2 s-1 . The radioisotope formed by (n, γ) reaction is 76As with T 1/2= 26.4h. Separations of valence states were performed by electrophoresis. Radiochemical yields of As V were higher than those obtained by other workers in the irradiation of arsenic oxygenated compounds; a similar high yield of Sb V was also found previously on the irradiation of thioantimony compounds and seems to be related to the covalent character of the As-S bond; likewise, internal conversion accounts for the primary oxidation of recoil atoms.
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J. F. Facetti-Masulli, H. D. Colman, "Chemical effects of neutron irradiation on arsenic sulfides," RAD Conf. Proc, vol. 4, 2020, pp. 106–108, http://doi.org/10.21175/RadProc.2020.22