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Neutron-induced fission cross section ofU234measured at the CERN n_TOF facility
- Source :
- Physical Review C. 89
- Publication Year :
- 2014
- Publisher :
- American Physical Society (APS), 2014.
-
Abstract
- The neutron-induced fission cross section of U234 has been measured at the CERN n-TOF facility relative to the standard fission cross section of U235 from 20 keV to 1.4 MeV and of U238 from 1.4 to 200 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with a detection efficiency of no less than 97%. The high instantaneous flux and the low background characterizing the n-TOF facility resulted in wide-energy-range data (0.02 to 200 MeV), with high energy resolution, high statistics, and systematic uncertainties bellow 3%. Previous investigations around the energy of the fission threshold revealed structures attributed to β-vibrational levels, which have been confirmed by the present measurements. Theoretical calculations have been performed, employing the talys code with model parameters tuned to fairly reproduce the experimental data. © 2014 American Physical Society.
- Subjects :
- Physics
Nuclear and High Energy Physics
Large Hadron Collider
010308 nuclear & particles physics
Fission
Detector
Flux
01 natural sciences
7. Clean energy
Nuclear physics
Cross section (physics)
0103 physical sciences
Ionization chamber
Neutron
Nuclear Experiment
010306 general physics
High energy resolution
Subjects
Details
- ISSN :
- 1089490X and 05562813
- Volume :
- 89
- Database :
- OpenAIRE
- Journal :
- Physical Review C
- Accession number :
- edsair.doi...........0aa5a83b33267773cb916e59beff81c2