Additional excitation functions for radionuclides obtained by deuteron irradiation of Ta up to 50 MeV

Hermanne, A. and Tárkányi, F. and Takács, S. and Ditrói, F. (2020) Additional excitation functions for radionuclides obtained by deuteron irradiation of Ta up to 50 MeV. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 481. pp. 82-90. ISSN 0168583X

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Abstract

Additional excitation functions for deuteron induced reactions up to 48.6 MeV on quasi mono-isotopic Ta (99.99% 181Ta) were experimentally determined using the activation method through stacked foil irradiation. Cross-sections for the production of 177,178,181W, 177cum, 178g,180g, 182m+gTa and 175,179m2,180m,181Hf were derived from high resolution gamma-spectrometry and X-ray analysis. Comparison with the few earlier published experimental data and with values predicted by the theoretical code TALYS 1.6 (as available in the on-line library TENDL-2019) are discussed. Thick target yields for medically or industrially relevant longer-lived 177,178g,180g,182m+gTa and 178,181W, calculated from fits to our experimental excitation curves, are discussed. Estimations on possible occupational doses to maintenance or scientific personnel around high power accelerators originating from activated Ta structural elements are updated.

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