Radium-225

ISOTOPE ²²⁵Ra
Half Life / Daughter	14.8 days to actinium-225
Decay Mode	Multiple alpha and beta emmisions ot stable bismuth-209
Major Radiation	Alpha - 8.38 MeV Beta - 1.42 MeV
Form	Nitrate in 0.1 M nitric acid
Activity	3.92 x 10⁴ Ci/g; carrier free
Radiopurity	90 - 95% radium-225
PRODUCTION
Source	Decay of thorium-229
Processing	Ion-exchange and solvent extraction
DISTRIBUTION
Shipment	Glass screw-cap bottle in nonreturnable container
Availability	Every 2 weeks, 20-30 mCi. 4-6 weeks advance order
Unit of Sale	Millicurie
Contact	Oak Ridge National Laboratory Isotope Business Office Call: (865) 574-6984 Fax: (865) 574-6986 email: isotopes@ornl.gov