Integral cross section of the 99Tc(γ, γ′)99mTc reaction in the 15-50 MeV energy region

Tsutomu Sekine, Kenji Yoshihara, László Lakosi, Zsolt Németh, Árpád Veres

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11 Citations (Scopus)


Photoexcitation of radioactive 99Tc was studied by irradiation with 15-50 MeV bremsstrahlung. The integral cross sections of the 99Tc(γ, γ′)99mTc reaction and the reference 115In(γ, γ′)115mIn reaction were found to be nearly constant as (5.8 ± 1.0) × 10-27 cm2 MeV and (9.3 ± 0.4) × 10-27 cm2 MeV, respectivel in the given energy range. The large second increase of the cross section described in earlier reports was observed neither for 115In nor for 99Tc.

Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalInternational Journal of Radiation Applications and Instrumentation. Part
Issue number2
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Radiation
  • Engineering(all)


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