Cross section measurements using gas and solid targets for production of the positron-emitting radionuclide O-14

Z. Kovács, B. Scholten, F. Tárkányi, H. H. Coenen, S. M. Qaim

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Irradiation of nitrogen with protons leads to 11C (T1/2 = 20.4 min) via the well-known 14N(p, α) reaction. However, 14O (T1/2 = 70.6 s) and 13N (T1/2 = 10 min) are also formed as side products via the 14N(p, n) and 14N(p, d + pn) reactions, respectively. In this work detailed cross section measurements were carried out for those two side reactions up to 19.2 MeV using N2 gas and nitrogen-containing solid targets. From the data, the thick-target yields and the exact level of radioactive impurities in 11C were calculated. In the case of 14O, the results also confirmed the possibility of producing this β+ emitting radionuclide in sufficient quantities for PET investigations.

Original languageEnglish
Pages (from-to)185-189
Number of pages5
JournalRadiochimica Acta
Issue number4
Publication statusPublished - Aug 1 2003



  • Excitation function
  • N gas target
  • Nitrogen-containing solid target
  • Nuclear reaction
  • PET
  • Positron emitters C, N, O
  • Thick target yield

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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