Excitation functions for some W, Ta and Hf radionuclides obtained by deuteron irradiation of Ta up to 40 MeV |
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Authors: | A. Hermanne,L. Daraban,S. Taká cs,A. Ignatyuk,M. Baba |
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Affiliation: | a Cyclotron Laboratory, Vrije Universiteit Brussel (VUB), Laarbeeklaan 103, 1090 Brussels, Belgium b Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), 4026 Debrecen, Hungary c Institute of Physics and Power Engineering (IPPE), Obninsk 249020, Russia d Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai 980-8578, Japan |
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Abstract: | Experimental excitation functions for deuteron induced reactions up to 40 MeV on mono-isotopic Ta (181Ta) were measured with the activation method using a stacked foil irradiation technique. From high resolution gamma spectrometry and X-ray analysis cross-section data for the production of 181W, 177,178g,180g,182m+gTa, and 179m2,180mHf were determined. Comparison with the scarce earlier published data are presented and results for values predicted by different theoretical codes, adapted for more reliable calculations for d-induced reactions, are included. Thick target yields for 182m+g,180g,178gTa and 181W were calculated from a fit to our experimental excitation curves. Using dose conversion factors and irradiation scenarios, possible occupational doses to maintenance or scientific personnel around high power accelerators where Ta based structural elements (collimators, beam stoppers, shielding) are present could be derived. |
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Keywords: | 25.45.&minus z 27.70.+q 29.25.Rm 87.58.&minus b |
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