Annual Technical Progress Report
This report describes the results generated during phase 1 of this project. During this phase, the main tools that are used to compute the thermal neutron scattering kernels for graphite, beryllium, beryllium oxide, zirconium hydride, light water, polyethylene were implemented and tested. This includes a modified NJOY/LEAPR code system, the GASKET code, and the ab initio condensed matter codes VASP and PHONON. Thermal neutron scattering kernels were generated for graphite, beryllium, beryllium oxide. In the case of graphite, new phonon spectra were examined. The first is a spectrum based on experiments performed at Oak Ridge National Laboratory in the early seventies, and the second is generated using the ab initio methods. In the case of beryllium, and beryllium oxide, a synthetic approach for generating the phonon spectra was implemented. In addition, significant progress was made on an experiment to benchmark the graphite scattering kernels was made. The simulations of this experiment show that differences on the order of a few percent, in Pu-239 detector responses, can be expected due to the use of different scattering kernels. (B204) NOT A FINAL REPORT
- Research Organization:
- North Carolina State Univ., Raleigh, NC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Institute Balseiro (US)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy, Science and Technology (NE) (US)
- DOE Contract Number:
- FG03-02SF22514
- OSTI ID:
- 801764
- Report Number(s):
- DOESF22514APR01; NERI 01-140; TRN: US200306%%406
- Resource Relation:
- Other Information: PBD: 2 Oct 2002
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BENCHMARKS
BERYLLIUM
BERYLLIUM OXIDES
GASKETS
GRAPHITE
KERNELS
PHONONS
POLYETHYLENES
PROGRESS REPORT
SCATTERING
SPECTRA
THERMAL NEUTRONS
ZIRCONIUM HYDRIDES
NEUTRON SCATTERING
THERMAL
SCATTERING LAW
GENERATION IV NUCLEAR REACTOR
SAFETY
SLOWING DOWN
BERYLLIUM OXIDE
ZIRCONIUM HYDRIDE
LIGHT WATER
POLYETHYLENE