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Title: Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium

During the purification of radioisotopes, decay periods or time dependent purification steps may be required to achieve a certain level of radiopurity in the final product. Actinum-225 (Ac-225), Silver-111 (Ag-111), Astatine-211 (At-211), Ruthenium-105 (Ru-105), and Rhodium-105 (Rh-105) are produced in a high energy proton irradiated thorium target. Experimentally measured cross sections, along with MCNP6-generated cross sections, were used to determine the quantities of Ac-225, Ag-111, At-211, Ru-105, Rh-105, and other co-produced radioactive impurities produced in a proton irradiated thorium target at Brookhaven Linac Isotope Producer (BLIP). Ac-225 and Ag-111 can be produced with high radiopurity by the proton irradiation of a thorium target at BLIP.
Authors:
 [1] ; ORCiD logo [2] ;  [1] ;  [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Isotope Production Lab. Collider-Accelerator Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Isotope and Fuel Cycle Technology Division
Publication Date:
Report Number(s):
BNL-211456-2019-JAAM
Journal ID: ISSN 1420-3049
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Molecules
Additional Journal Information:
Journal Volume: 24; Journal Issue: 6; Journal ID: ISSN 1420-3049
Publisher:
MDPI
Research Org:
Brookhaven National Lab. (BNL), Upton, NY (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCES; isotope production; Actinium-225; Silver-111; MCNPX; Thorium; proton irradiation; fission products; Sr-82; critical process parameter
OSTI Identifier:
1503515

Fitzsimmons, Jonathan, Griswold, Justin, Medvedev, Dmitri, Cutler, Cathy, and Mausner, Leonard. Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium. United States: N. p., Web. doi:10.3390/molecules24061095.
Fitzsimmons, Jonathan, Griswold, Justin, Medvedev, Dmitri, Cutler, Cathy, & Mausner, Leonard. Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium. United States. doi:10.3390/molecules24061095.
Fitzsimmons, Jonathan, Griswold, Justin, Medvedev, Dmitri, Cutler, Cathy, and Mausner, Leonard. 2019. "Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium". United States. doi:10.3390/molecules24061095. https://www.osti.gov/servlets/purl/1503515.
@article{osti_1503515,
title = {Defining Processing Times for Accelerator Produced 225Ac and Other Isotopes from Proton Irradiated Thorium},
author = {Fitzsimmons, Jonathan and Griswold, Justin and Medvedev, Dmitri and Cutler, Cathy and Mausner, Leonard},
abstractNote = {During the purification of radioisotopes, decay periods or time dependent purification steps may be required to achieve a certain level of radiopurity in the final product. Actinum-225 (Ac-225), Silver-111 (Ag-111), Astatine-211 (At-211), Ruthenium-105 (Ru-105), and Rhodium-105 (Rh-105) are produced in a high energy proton irradiated thorium target. Experimentally measured cross sections, along with MCNP6-generated cross sections, were used to determine the quantities of Ac-225, Ag-111, At-211, Ru-105, Rh-105, and other co-produced radioactive impurities produced in a proton irradiated thorium target at Brookhaven Linac Isotope Producer (BLIP). Ac-225 and Ag-111 can be produced with high radiopurity by the proton irradiation of a thorium target at BLIP.},
doi = {10.3390/molecules24061095},
journal = {Molecules},
number = 6,
volume = 24,
place = {United States},
year = {2019},
month = {3}
}

Works referenced in this record:

Application of ion exchange and extraction chromatography to the separation of actinium from proton-irradiated thorium metal for analytical purposes
journal, February 2015