Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix

Tara Mastren; Valery Radchenko; Allison Owens; Roy Copping; Rose Boll; Justin R. Griswold; Saed Mirzadeh; Lance E. Wyant; Mark Brugh; Jonathan W. Engle; Francois M. Nortier; Eva R. Birnbaum; Kevin D. John; Michael E. Fassbender

doi:10.1038/s41598-017-08506-9

Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix

Tara Mastren, Valery Radchenko, Allison Owens, Roy Copping, Rose Boll, Justin R. Griswold, Saed Mirzadeh, Lance E. Wyant, Mark Brugh, Jonathan W. Engle, Francois M. Nortier, Eva R. Birnbaum, Kevin D. John, Michael E. Fassbender

Radiochemical Process Development

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

A new method has been developed for the isolation of ^223,224,225Ra, in high yield and purity, from a proton irradiated ²³²Th matrix. Herein we report an all-aqueous process using multiple solid-supported adsorption steps including a citrate chelation method developed to remove >99.9% of the barium contaminants by activity from the final radium product. A procedure involving the use of three columns in succession was developed, and the separation of ^223,224,225Ra from the thorium matrix was obtained with an overall recovery yield of 91 ± 3%, average radiochemical purity of 99.9%, and production yields that correspond to physical yields based on previously measured excitation functions.

Original language	English
Article number	8216
Journal	Scientific Reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-08506-9
State	Published - Dec 1 2017

Funding

We gratefully recognize the United States Department of Energy, Office of Science, Isotope Development and Production for Research and Application subprogram within Office of Nuclear Physics and the LANL LDRD program (LDRD 20160439ER) for financial support.

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Mastren, T., Radchenko, V., Owens, A., Copping, R., Boll, R., Griswold, J. R., Mirzadeh, S., Wyant, L. E., Brugh, M., Engle, J. W., Nortier, F. M., Birnbaum, E. R., John, K. D., & Fassbender, M. E. (2017). Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix. Scientific Reports, 7(1), Article 8216. https://doi.org/10.1038/s41598-017-08506-9

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abstract = "A new method has been developed for the isolation of 223,224,225Ra, in high yield and purity, from a proton irradiated 232Th matrix. Herein we report an all-aqueous process using multiple solid-supported adsorption steps including a citrate chelation method developed to remove >99.9% of the barium contaminants by activity from the final radium product. A procedure involving the use of three columns in succession was developed, and the separation of 223,224,225Ra from the thorium matrix was obtained with an overall recovery yield of 91 ± 3%, average radiochemical purity of 99.9%, and production yields that correspond to physical yields based on previously measured excitation functions.",

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AU - Boll, Rose

AU - Griswold, Justin R.

AU - Mirzadeh, Saed

AU - Wyant, Lance E.

AU - Brugh, Mark

AU - Engle, Jonathan W.

AU - Nortier, Francois M.

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AU - John, Kevin D.

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AB - A new method has been developed for the isolation of 223,224,225Ra, in high yield and purity, from a proton irradiated 232Th matrix. Herein we report an all-aqueous process using multiple solid-supported adsorption steps including a citrate chelation method developed to remove >99.9% of the barium contaminants by activity from the final radium product. A procedure involving the use of three columns in succession was developed, and the separation of 223,224,225Ra from the thorium matrix was obtained with an overall recovery yield of 91 ± 3%, average radiochemical purity of 99.9%, and production yields that correspond to physical yields based on previously measured excitation functions.

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Simultaneous Separation of Actinium and Radium Isotopes from a Proton Irradiated Thorium Matrix

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