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HK: Fachverband Physik der Hadronen und Kerne
HK 32: Structure and Dynamics of Nuclei VI
HK 32.6: Talk
Wednesday, March 22, 2023, 15:15–15:30, SCH/A215
Study of the dipole response of 242Pu with nuclear resonance fluorescence — •M. Beuschlein1, J. Birkhan1, J. Kleemann1, O. Papst1, N. Pietralla1, R. Schwengner2, S. Weiß2, V. Werner1, U. Ahmed1, T. Beck1,3, I. Brandherm1, A. Gupta1, J. Hauf1, K. E. Ide1, P. Koseoglou1, H. Mayr1, C.M. Nickel1, K. Prifti1, M. Singer1, T. Stetz1, and R. Zidarova1 — 1Institute for Nuclear Physics, TU Darmstadt, Germany — 2HZDR, Dresden, Germany — 3FRIB, MSU, East Lansing, MI, USA
Nuclear resonance fluorescence (NRF) of a sample of 242Pu was studied at the Darmstadt High-Intensity Photon setup.
The superconducting Darmstadt linear electron accelerator S-DALINAC was used to produce bremsstrahlung up to an endpoint energy of 3.7 MeV to irradiate a sample of PuO2, which had a total mass of about 1 g.
It was highly enriched in the isotope of interest 242Pu and kept in a special target container.
Photons were detected with two high-purity Germanium detectors placed at different angles relative to the beam axis.
NRF signals from the sample were identified by comparison with measurements using an empty target container and measurements of the sample’s radioactivity.
Evidence for NRF signals from 242Pu was observed.
This makes this isotope the heaviest nuclide for which NRF information is available.
Details of the experiment will be described and γ-ray spectra will be presented and discussed.
We thank the Institute of Resource Ecology of HZDR for providing the 242Pu-sample.
This work was supported by the LOEWE research project ’Nukleare Photonik’ by the State of Hesse.