Speaker
Description
The study of the atomic nuclei photodisintegration is one of the important tasks of fundamental nuclear physics, since a quantitative comparison of such important branches of giant resonance decay as (γ, n) and (γ, p) channels has not yet been carried out. This is due to the limited measurements of photoproton cross sections. Data of the radionuclide yields on iron atoms are also important for the development of photoactivation analysis of various origin structural materials.
We have studied the weighted average yield of the (γ, p) reaction for 57Fe upon irradiation of natural composition iron targets. The targets were irradiated with 20 MeV bremsstrahlung quanta. Irradiated targets were measured by an Ortec semiconductor spectrometer with a high purity germanium detector. The 847 keV γ-line from the 56Mn decay was reliably distinguished in the spectra, as well as by the half-life measurement method. As a result, the weighted average output Y(γ, p)=5.1±0.6 mbn was obtained. However, calculations of this output using the Talys 1.96 code results YT=1.1 mbn. This value indicates a large role of non-statistical processes. We also considered the mechanism of semidirect reactions, taking into account the isospin splitting of the resonance, and we obtained the value YI=1.5 mbn. The received results are discussed.
This work is supported by the Russian Science Foundation under grant 22-29-01013.
| The speaker is a student or young scientist | No |
|---|---|
| Section | 2. Experimental and theoretical studies of nuclear reactions |
