Actinium-225 (Accelerator-Produced)

Related Products:   Actinium-225  Actinium-227
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ISOTOPE    Actinium-225 (Accelerator-Produced)
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Half Life / Daughter9.920 days to francium-221
Decay ModeMultiple alpha and beta emissions to stable bismuth-209
Major RadiationAlpha: 5.83 MeV
Beta: 1.42 MeV
FormSolid actinium nitrate
ActivityTheoretical Ac-225 Specific Activity: 5.8x104 Ci/g; not carrier
free
(contains Ac-227)
Radiopurity≥99% by activity (gamma spectroscopy), not including daughter
isotopes
or Ac-227;
≤2% Ac-227 at shipment (value extrapolated from
earlier
runs)
PRODUCTION
SourceProton irradiation of a natural thorium target at Brookhaven or Los Alamos
National
Laboratory,
chemically processed at Oak Ridge National
Laboratory
ProcessingSeparated by ion exchange and extraction chromatography
DISTRIBUTION
ShipmentGlass screw top V-vial in nonreturnable container
AvailabilityEvery other month
Unit of SaleMillicuries
ContactOak Ridge National Laboratory
National Isotope Development Center
Call: (865) 574-6984
Fax: (865) 574-6986
email: contact@isotopes.gov
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