Proton-induced cross sections relevant to production of 225Ac and 223Ra in natural thorium targets below 200MeV

Cross sections for 223,225Ra, 225Ac and 227Th production by the proton bombardment of natural thorium targets were measured at proton energies below 200MeV. Our measurements are in good agreement with previously published data and offer a complete excitation function for 223,225Ra in the energy rang...

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Published inApplied radiation and isotopes Vol. 70; no. 11; pp. 2602 - 2607
Main Authors Weidner, J.W., Mashnik, S.G., John, K.D., Hemez, F., Ballard, B., Bach, H., Birnbaum, E.R., Bitteker, L.J., Couture, A., Dry, D., Fassbender, M.E., Gulley, M.S., Jackman, K.R., Ullmann, J.L., Wolfsberg, L.E., Nortier, F.M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2012
Subjects
Actinium-225
Cross section
Proton irradiation
Radium-223
Thorium target
Yield
Actinium-225
Yield
Thorium target
Cross section
Radium-223
Proton irradiation
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Summary:Cross sections for 223,225Ra, 225Ac and 227Th production by the proton bombardment of natural thorium targets were measured at proton energies below 200MeV. Our measurements are in good agreement with previously published data and offer a complete excitation function for 223,225Ra in the energy range above 90MeV. Comparison of theoretical predictions with the experimental data shows reasonable-to-good agreement. Results indicate that accelerator-based production of 225Ac and 223Ra below 200MeV is a viable production method. ► Natural thorium targets were irradiated with protons up to a nominal 200MeV. ► 225Ac, 223,225Ra, and 227Th production cross sections were measured. ► Multi-curie quantities of 225Ac and 223Ra can likely be produced at Los Alamos and Brookhaven. ► Accelerator-based production of 225Ac and 223Ra is a viable production method
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2012.07.006