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Related Experiment Videos

Sc-47 production from titanium targets using electron linacs.

Mayir Mamtimin1, Frank Harmon1, Valeriia N Starovoitova2

  • 1Idaho Accelerator Center, Idaho State University, 1500 Alvin Ricken Dr, Pocatello, ID 83201, USA.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|May 2, 2015
PubMed
Summary

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Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2015

Photonuclear production of Scandium-47 from Titanium-48 is feasible using electron beams. Optimized target conditions and beam energy can yield high specific activity of (47)Sc without other scandium isotopes.

Area of Science:

  • Nuclear Physics
  • Radiochemistry
  • Medical Isotope Production

Background:

  • Scandium-47 ((47)Sc) is a promising radioisotope for targeted radionuclide therapy.
  • Photonuclear reactions offer an alternative production pathway for medical isotopes.
  • Previous methods for (47)Sc production have limitations regarding yield and purity.

Purpose of the Study:

  • To investigate the feasibility of producing (47)Sc from (48)Ti via the (48)Ti(γ,p)(47)Sc photonuclear reaction.
  • To determine optimal conditions for maximizing (47)Sc yield and specific activity.
  • To assess the impact of beam energy and target enrichment on byproduct formation.

Main Methods:

  • Utilized the MCNPX radiation transport code to simulate photon flux distributions.
Keywords:
MCNPXPhotonuclearRadioisotope ProductionSpecific activity

Related Experiment Videos

  • Calculated (47)Sc production rates and yields based on electron beam energy.
  • Performed experimental benchmarking by irradiating natural titanium foils with a 22MeV electron beam.

    • Main Results:

    • Photonuclear production of (47)Sc from (48)Ti is feasible.
    • Enriched (48)Ti targets with a 22MeV, 1mA beam yield hundreds of MBq/g of (47)Sc without other scandium isotopes.
    • Reducing target size significantly increases specific activity to tens of GBq/g.
    • Higher beam energies increase yields but also produce unwanted (46)Sc above the (48)Ti(γ,np)(46)Sc reaction threshold.
    • Experimental results closely matched simulation predictions.

    Conclusions:

    • Photonuclear production using enriched (48)Ti is a viable method for producing high-purity (47)Sc.
    • Optimizing target geometry and beam parameters is crucial for achieving high specific activities.
    • The simulation approach provides reliable predictions for experimental validation.