Effective photoexcitation cross section of 115In(γ,γ′)115mIn from photoactivation data

Photoexcitation yields of the 115 m In metastable state were measured with Bremsstrahlung γ beams over a range of endpoint energies between 4.5 and 18 MeV. An effective cross section of the 115In ( γ,γ ′) 115 m In photoexcitation cross section was determinedto reproduce the data. This cross section is built from a cross section calculated with the TALYS code, to which an enhancement is added at about 8.5 MeV.