Published 2019
| Version v1
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Measurement of the double-differential neutron cross section of UO2 from room temperature to hot full power conditions
Creators
- 1. CEA - Centre de Cadarache, DEN, F-13108 Saint Paul Les Durance (France)
- 2. Institute Laue Langevin, F-38000 Grenoble (France)
Description
Phonon densities of states (PDOS) of U in UO2 and O in UO2 have been determined from double-differential neutron cross sections of UO2 measured at the Institute Laue Langevin (Grenoble) at 300 K, 600 K and 900 K. The obtained PDOS were used to generate temperature dependent thermal scattering laws (TSL) with the LEAPR module of the processing code NJOY. The impact of the TSL on UOX fuel calculations was quantified with the Monte-Carlo code TRIPOLI4. At room temperature, the use of TSL of UO2 in neutronic calculations implies a decrease of the calculated reactivity ranging from -50 pcm to -100 pcm. (authors)
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Additional details
Publishing Information
- Imprint Pagination
- 9 p.
- Report number
- INIS-FR--21-0140
Conference
- Title
- 11. international conference on nuclear criticality safety
- Acronym
- ICNC 2019
- Dates
- 15-20 Sep 2019
- Place
- Paris (France)
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 52011516
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- DIFFERENTIAL CROSS SECTIONS; MEASURING METHODS; MILLI EV RANGE; NEUTRON REACTIONS; PHONONS; SCATTERING; THERMALIZATION; TIME-OF-FLIGHT METHOD; URANIUM DIOXIDE
- Descriptors DEC
- ACTINIDE COMPOUNDS; BARYON REACTIONS; CHALCOGENIDES; CROSS SECTIONS; ENERGY RANGE; HADRON REACTIONS; NUCLEAR REACTIONS; NUCLEON REACTIONS; OXIDES; OXYGEN COMPOUNDS; QUASI PARTICLES; SLOWING-DOWN; URANIUM COMPOUNDS; URANIUM OXIDES
Optional Information
- Notes
- 11 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses