Excitation functions of (p, 2n) and (p, pn) reactions and differential and integral yields of 123I in proton induced nuclear reactions on highly enriched 124Xe

F. Tárkányi, S. M. Qaim, G. Stöcklin, M. Sajjad, R. M. Lambrecht, H. Schweickert

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Abstract

Excitation functions were measured for (p, 2n) and (p, pn) reactions on 99.9% enriched 124Xe from threshold up to 44 MeV. The (p, 2n) reaction is much stronger than the (p, pn) channel; above 36 MeV, however, the two processes have almost equal cross sections. Differential yields of 123I were measured experimentally as a function of proton energy and were also calculated from the excitation functions. Our experimental and theoretical yield data are consistent within 15%, but are lower by a factor of 2 than the literature experimental values. Our studies show that the optimum energy range for the production of 123I is Ep = 29 → 23 MeV. The theoretically expected thick target yield of 123I at 6.6 h after EOB is 11.2 mCi/μAh, and is in agreement with the high-current experimental production yields.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalInternational Journal of Radiation Applications and Instrumentation. Part
Volume42
Issue number3
DOIs
Publication statusPublished - 1991

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ASJC Scopus subject areas

  • Radiation
  • Engineering(all)

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