839 articles – 5682 Notices  [english version]
HAL : in2p3-00738344, version 1

Fiche détaillée  Récupérer au format
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 698 (2013) 224-233
A facility for fast-neutron irradiations at Jyväskylä and its use for nuclide cross-section measurements in fission
G. Lhersonneau1, T. Malkiewicz2, P. Jones, P. Karvonen, S. Ketelhut, O. Bajeat1, M. Fadil1, S. Gaudu1, M.G. Saint-Laurent1, W.H. Trzaska

An efficient and reliable transport system for fast-neutron irradiations has been built at the Physics Department, Jyväskylä, Finland. It is constructed from commercial bicycle components and is driven by a computer-controlled stepping motor. It can be operated in single or cyclic mode. The neutron irradiated targets are moved within 1.2 seconds (full stop to full stop) to a well-shielded position 3 meters away where they can be removed or directly investigated by γ spectroscopy. The system has been built with the aim to experimentally verify the calculated production rates of neutron-rich nuclei in the SPIRAL2 uranium target. However, the facility can be used for various kinds of fast-neutron irradiations, with a neutron spectrum up to 60 MeV produced by stopping a deuteron beam of several μA in a thick target. Examples of applications are activation and integral cross-section measurements, evaluation of damages in materials and biological cells.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
2 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physique/Physique Nucléaire Expérimentale
fission – thick target neutron yield – activation – neutron-induced 13 fission