Effective photoexcitation cross section of115In(γ,γ′)115mIn from photoactivation data

Photoexcitation yields of the ^115mIn metastable state were measured with Bremsstrahlung gamma beams over a range of endpoint energies between 4.5 and 18 MeV. An effective cross section of the ^115In(gamma,gamma')^115mIn 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.