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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Structure and Dynamics of Nuclei I

HK 5.7: Vortrag

Montag, 18. März 2019, 15:45–16:00, HS 14

Fission cross section measurements of ²³⁵U and ²⁴²Pu — •Hans Hoffmann^1,2, Toni Kögler^1,2, Roland Beyer¹, Arnd R. Junghans¹, and Ralf Nolte³ — ¹Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — ²Technische Universität Dresden, 01062 Dresden, Germany — ³Physikalisch-Technische Bundesanstalt, 38116 Braunschweig, Germany

At Physikalisch-Technische Bundesanstalt the neutron-induced fission cross sections of ²³⁵U and ²⁴²Pu have been measured using parallel plate fission ionization chambers with novel, large area actinide deposits made in the Institute of Nuclear Chemistry, Mainz (A. Vascon et al., Appl. Radiat. Isotopes 95 (2015) 36). The fission cross section of ²⁴²Pu has been measured at 15 MeV using quasimonoenergetic neutrons from the DT reaction, which is above the threshold for second chance fission. These data extend the measurement done at HZDR’s neutron time of flight facility nELBE to higher neutron energy (T. Kögler et al., Phys. Rev. C (2019) in press)). A status report of the experiment and data analysis will be given. This work has been supported by the German Federal Ministry of Education and Research (PTKA-WTE 02NUK13A).