Speaker
Description
High-precision experimental data on photon-induced reactions provide an important contribution to the pursuit of a complete microscopic description of the fission process due to their selectivity on excitation of low multipolarity. Unique information can be extracted by using mono-chromatic polarized photons in the entrance channel allowing a determination of transition states through which nuclear fission proceeds.
Mass, total kinetic energy and polar as well as azimuthal angular distribution of the fission fragments can be measured simultaneously in order to examine correlation between the observables using a position-sensitive twin Frisch-grid ionization chamber [1].
This contribution will present data from our recently performed experimental photofission campaigns at the High-Intensity γ-Ray Source (HIγS) [2] at Triangle Universities Nuclear Laboratory (TUNL) investigating photon-induced fission of $^{234}U$ at different excitation energies, including values close to the fission barrier.
*This work is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 499256822 – GRK 2891 'Nuclear Photonics' and by Project ELI-RO/DFG/2023_001 ARNPhot funded by the Institute of Atomic Physics, Romania and supported in part by the ELI-RO program, contract number ELI-RO/RDI/2024-007 ELITE and by the Romanian Ministry of Research and Innovation under research contract PN 23 21 01 06.
