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E1-2006-54 Calibration of Track Detectors for Fission Rate Determination: an Experimental and Theoretical StudyThe calibration factor w, for the determination ofˇssion rate inˇssionable materials using the track detectors (mica, Lavsan, and soda glass) was studied experimentally and by the Monte Carlo method. It is shown that w obtained via low-energy particle inducedˇssion, can be used for the determination ofˇssion rate in a particle (neutron)ˇeld of unknown characteristics (energy and angular distribution) if in the determination of w and in its subsequent use the mean density of the tracks in the track detectors on both sides of theˇssion foil is used.
Prompt and delayed neutrons (DN) from pulsed irradiation of geometrically identical natural uranium and lead targets by 1 and 4 GeV deuterons were measured at NUCLOTRON facility of Joint Institute for Nuclear Research. The massive (~300 kg) cubic shaped targets were surrounded by 10 cm lead blanket. Neutrons were measured by the assembly of 3 He counters embedded in moderator and by threshold activation detectors. The DN decay curves were analysed for both targets and information on fragment yields for lead target and fission properties for uranium one was extracted. The obtained experimental information could be useful for verification of INC and transport codes. The results of this experiment are important for development of advanced ADS systems and other applications.
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