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US 12,763,229 B2Granted
Systems and methods for producing actinium-225
AssigneeThe Regents of the University of California
InventorsLee Bernstein, Jon Batchelder, Jonathan T. Morrell, Andrew Voyles
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Abstract
This disclosure provides systems, methods, and apparatus related to the production of actinium-225. In one aspect, a target is irradiated with a beam of deuterons to generate a beam of neutrons. A radium-226 target is irradiated with the beam of neutrons to generate radium-225.
Claims19
A method comprising:
- irradiating a target with a beam of deuterons to generate a beam of neutrons traveling in a direction parallel with a direction of the beam of deuterons, wherein the target comprises a beryllium target that is 4 millimeters to 8 millimeters thick;
- irradiating a radium-226 target with the beam of neutrons to generate radium-225, wherein the beam of neutrons has a flux of 1×1010 neutrons/cm2/sec to 3×1012 neutrons/cm2/sec;
- waiting a period of time to allow at least some of the radium-225 to decay to actinium-225 by beta decay;
- and
- separating, from unreacted radium-226 and the radium-225, the actinium-225.
2 more elements
A method comprising:
- irradiating a target with a beam of deuterons to generate a beam of neutrons traveling in a direction parallel with a direction of the beam of deuterons, the beam of neutrons having a flux of 1×1010 neutrons/cm2/sec to 3×1012 neutrons/cm2/sec and neutrons in the beam of neutrons have an energy of 10 MeV or greater, wherein the target comprises a beryllium target that is 4 millimeters to 8 millimeters thick;
- irradiating a radium-226 target with the beam of neutrons to generate radium-225;
- waiting a period of time to allow at least some of the radium-225 to decay to actinium-225 by beta decay;
- and
- separating, from unreacted radium-226 and the radium-225, the actinium-225.
2 more elements
Dependencies are inferred from the claim text.