Thorium silicate compound as a solid-state target for production of isomeric thorium-229 nuclei by electron beam irradiationстатья
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Аннотация:In this paper, we discuss an idea of the experiment for excitation of the isomeric
transition in thorium-229 nuclei by irradiating with electron beam targets with necessary
physical characteristics. The chemical composition and bandgap of ThSi10O22
were determined by X-ray photoelectron spectroscopy and reflection electron energy
loss spectroscopy. It was found that the energy gap is equal to 7.7 eV and does
not change when the target is exposed to a medium energy electron beam for a
long time. This indicates that the compound possesses high electron-beam resistance.
A quantitative estimation of the output function of isomeric thorium-229
nuclei generated by interaction of nuclei with the secondary electron flow formed
by irradiating the solid-state ThSi10O22-based target is given. The estimation shows
that ThSi10O22 is a promising thorium-containing target for investigating excitation
of the nuclear low-lying isomeric transition in the thorium-229 isotope using
medium-energy electrons.