Experimental study of the excitation functions of proton induced nuclear reactions on 167Er for production of medically relevant 167Tm

F. Tárkányi, A. Hermanne, S. Takács, B. Király, I. Spahn, A. V. Ignatyuk

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167Tm (T1/2=9.25 d) is a candidate radioisotope for medical therapy and diagnostics due to its Auger-electron and low-energy X- and gamma-ray emission. Excitation functions of the 167Er(p,n)167Tm reaction and 168Er(p,n)168Tm, 167Er(p,2n)166Tm, 166Er(p,2n)165Tm disturbing reactions were measured up to 15 MeV by using the stacked foil irradiation technique and gamma-ray spectroscopy. The measured excitation functions agree well with the results of ALICE-IPPE, EMPIRE-II and TALYS nuclear reaction model codes. The thick target yield of 167Tm in the 15-8 MeV energy range is 6.9 MBq/μAh. A short comparison of charged particle production routes of 167Tm is given.

Original languageEnglish
Pages (from-to)250-255
Number of pages6
JournalApplied Radiation and Isotopes
Issue number2
Publication statusPublished - Feb 1 2010



  • Cross section
  • Er target
  • Excitation function
  • Proton irradiation
  • Tm product

ASJC Scopus subject areas

  • Radiation

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