title: 225Ac and 223Ra production via 800 MeV proton irradiation of natural thorium targets.
abstract: Cross sections for the formation of (225,227)Ac, (223,225)Ra, and (227)Th via the proton bombardment of natural thorium targets were measured at a nominal proton energy of 800 MeV. No earlier experimental cross section data for the production of (223,225)Ra, (227)Ac and (227)Th by this method were found in the literature. A comparison of theoretical predictions with the experimental data shows agreement within a factor of two. Results indicate that accelerator-based production of (225)Ac and (223)Ra is a viable production method.
authors.affiliation: Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA. john.weidner@us.army.mil
authors.forename: J W
authors.initials: JW
authors.lastname: Weidner
authors.forename: S G
authors.initials: SG
authors.lastname: Mashnik
authors.forename: K D
authors.initials: KD
authors.lastname: John
authors.forename: B
authors.initials: B
authors.lastname: Ballard
authors.forename: E R
authors.initials: ER
authors.lastname: Birnbaum
authors.forename: L J
authors.initials: LJ
authors.lastname: Bitteker
authors.forename: A
authors.initials: A
authors.lastname: Couture
authors.forename: M E
authors.initials: ME
authors.lastname: Fassbender
authors.forename: G S
authors.initials: GS
authors.lastname: Goff
authors.forename: R
authors.initials: R
authors.lastname: Gritzo
authors.forename: F M
authors.initials: FM
authors.lastname: Hemez
authors.forename: W
authors.initials: W
authors.lastname: Runde
authors.forename: J L
authors.initials: JL
authors.lastname: Ullmann
authors.forename: L E
authors.initials: LE
authors.lastname: Wolfsberg
authors.forename: F M
authors.initials: FM
authors.lastname: Nortier
mesh_terms: D000186:Actinium / Q000737:chemistry; D001918:Brachytherapy; D011522:Protons; D011883:Radium / Q000737:chemistry; D013910:Thorium / Q000528:radiation effects*
chemical_list: D011522:Protons; D013910:Thorium; D000186:Actinium; D011883:Radium