The application of the unfolding technique for determination of photo-nuclear reaction cross-section with an example on the 115In(γ,γ′)115mIn reaction

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 57; no. 8
• Main Authors: Medic, Z., Jovancevic, N., Maletic, D., Teterev, Y., Mitrofanov, S., Belov, A., Krmar, M., Hult, M., Oberstedt, S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2021; Springer Nature B.V
• Subjects: Bremsstrahlung; Disks; Hadrons; Heavy Ions; Nuclear cross sections; Nuclear Fusion; Nuclear Physics; Nuclear reactions; Particle and Nuclear Physics; Photon beams; Photons; Physics; Physics and Astronomy; Regular Article - Experimental Physics
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/s10050-021-00567-9

The cross-section function for the 115 In( γ , γ ′ ) 115 m In reaction was determined in the energy range up to E γ = 9.6 MeV using the bremsstrahlung facility at the MT25 Microtron, JINR, Dubna. Natural indium disks were irradiated with bremsstrahlung, each disk with a beam of different endpoint energy. To the measured saturation activity built up in the wide-energy photon beam we applied the unfolding technique, developed recently at the JRC-Geel with the primary purpose of being used in neutron activation. The results were compared with TALYS 1.9 calculations and existing experimental data. Our results suggest that the application of existing unfolding technique allow determining unknown excitation functions of photon-induced reactions.