JOURNAL ARTICLE

MONTE CARLO SIMULATION OF THE RADIATION SOURCE TERM FROM [18O]H2O CYCLOTRON TARGET BOMBARDMENT WITH PROTONS OF 16.5 MEV.

  • Published In: Radiation Protection Dosimetry, 2023, v. 199, n. 6. P. 552 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Benavente-Castillo, Jhonny A; Silva, Teógenes A da; Fonseca, Telma C F; Lacerda, Marco A S 3 of 3

Abstract

This article focuses on estimating the radiation source term generated by the ^18O(p,n)^18F nuclear reaction used in PET cyclotrons for producing fluorine-18 (^18F), a key radionuclide in medical diagnostics. Using the Monte Carlo code MCNPX 2.7.0, the study modeled neutron production and energy spectra from a 16.5 MeV proton beam bombarding an ^18O-enriched water target in a GE-PETtrace 8 cyclotron at the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN) in Brazil. The modeled neutron flux and angular distributions were validated against experimental measurements using activation foils, with results indicating that the TENDL-2015 nuclear data library provided the closest agreement to observed data. The developed radiation source term can be applied conservatively for radiation protection assessments and neutron activation studies in PET cyclotron facilities producing ^18F with proton energies up to 16.5 MeV.

Additional Information

  • Source:Radiation Protection Dosimetry. 2023/04, Vol. 199, Issue 6, p552
  • Document Type:Article
  • Subject Area:History
  • Publication Date:2023
  • ISSN:01448420
  • DOI:10.1093/rpd/ncad050
  • Accession Number:163190606
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