[Zurück]

M. Calviani, D. Karadimos, G. Badurek, E. Jericha, H. Leeb, H. Oberhummer, M. Pigni, -. nTOF Collaboration:
"Measurement of neutron induced fission of ²³⁵U, ²³³U and ²⁴⁵Cm with the FIC detector at the CERN n_TOF facility";
in: "Proceedings of the International Conference on Nuclear Data for Science and Technology", EDP Sciences, Nice, France, 2008, ISBN: 978-2-7598-0090-2, S. 335 - 338.

A series of measurements of neutron induced fission cross se3ction of various TRU isotopes have been performed at the CERN n_TOF spallation neutron facility, in the energy range from thermal to nearly 250 MeV. The experimental apparatus consists in a fast ionization chamber (FIC), used as a fission fragment detector with a high efficiency. Good discrimination between alphas and fission fragments can be obtained with a simple amplitude threshold. In order to allow the monitoring of the neutron beam and to extract the n_TOF neutron flux, the well known cross section of the ²³⁵U(n,f) reaction, considered as a fission standard, has been used. preliminary results for the cross section are shown for some selected isotopes such as ²³⁵U, ²³³U and ²⁴⁵Cm in the energy range from 0.050 eV to about 2 MeV.

http://dx.doi.org/10.1051/ndata:07750

http://publik.tuwien.ac.at/files/PubDat_167258.pdf