title: Proton-induced cross sections relevant to production of 225Ac and 223Ra in natural thorium targets below 200 MeV.
abstract: Cross sections for (223,)(225)Ra, (225)Ac and (227)Th production by the proton bombardment of natural thorium targets were measured at proton energies below 200 MeV. Our measurements are in good agreement with previously published data and offer a complete excitation function for (223,)(225)Ra in the energy range above 90 MeV. Comparison of theoretical predictions with the experimental data shows reasonable-to-good agreement. Results indicate that accelerator-based production of (225)Ac and (223)Ra below 200 MeV is a viable production method.
authors.affiliation: Los Alamos National Laboratory, 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: F
authors.initials: F
authors.lastname: Hemez
authors.forename: B
authors.initials: B
authors.lastname: Ballard
authors.forename: H
authors.initials: H
authors.lastname: Bach
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: D
authors.initials: D
authors.lastname: Dry
authors.forename: M E
authors.initials: ME
authors.lastname: Fassbender
authors.forename: M S
authors.initials: MS
authors.lastname: Gulley
authors.forename: K R
authors.initials: KR
authors.lastname: Jackman
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; D011522:Protons; D011883:Radium / Q000737:chemistry; D013051:Spectrometry, Gamma; D013910:Thorium / Q000528:radiation effects*
chemical_list: D011522:Protons; D013910:Thorium; D000186:Actinium; D011883:Radium