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Showing 1 to 10 of 10 for “"neutron leakage"”.
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First-Flight Effects on Reactor Power Shapes and Neutron Leakage
Made available in DSpace on 2017-07-06T18:55:52Z (GMT). No. of bitstreams: 3 Polich_Timothy_J_MS.pdf: 24183567 bytes, checksum: 27f4e23c0cc79dba37c0833bbd66c606 (MD5) Polich_Timothy_J_MS_ABS.pdf: 453613 bytes, checksum: 2d8988ab0c50536bb28a23682aac29e3 (MD5) license.txt: 4813 bytes, checksum: …
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Fast neutron leakage spectra for assemblies containing thorium, D{u2082}O and natural uranium
… water. The experimental measurements of fast neutron spectra have been in two lattices of thorium metal and D₂O, a cylindrical array of close-packed natural uranium metal slugs in air, a D₂O sphere and cylinder, and a cylinder of thorium nitrate. A ²³⁵U fission disc, irradiated by a beam of …
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Analysis of Infinite Domain Criticality Zones in Finite Reactors (Uniform Power, Minimum Fuel Density, Exact Solutions, Poles of Bromwich Integral, Reduction of Pde's)
… to contain additional fuel to compensate for neutron leakage to sustain criticality.
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Investigation of a SPH-based sub-cell homogenization for PHWR using a multi-cell model
… homogenization (SH) for full nuclearreactor-core neutronics calculations because its implementation does not require any changes to existing computer codes. Previous work found that single-cell SPH applied to Pressurized Heavy Water Reactors (PHWR) yields virtually no improvement compared to …
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Computer simulation of neutron capture therapy.
… computer the production and use of reactor neutron beams f or boron capture therapy of brain tumors. The simulation accounts for radiation dose distributions in tissue produced by fast neutrons and by neutron capture reaction products such as gamma rays, C -particles, protons, and heavy …
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Time dependent non-extinction probability for fast burst reactors
… type of reactor that is able to achieve intense neutron pulses in very short periods of time using fissile material. Typically these systems are comprised of enriched metallic uranium fuel. During operation of a fast burst reactor, a phenomena known as a pre-initiation has been known to take …
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Small Modular Boiling Water Reactor Combined with External Superheaters
… 6.5 to 10 MPa has no significant effect on the neutronic performance. It is also found that increase in pressure would reduce the core pressure drop but increase the minimum chimney height required to develop natural circulation. In terms of thermodynamics, it is found that increasing the SMBWR …
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Design of an economically optimum PWR reload core for a 36-month cycle
… fuel performance and economics analysis. For the neutronics study, the core is modeled in 3 dimensions and in the steady-state using the codes CASMO-3/SIMULATE-3. Several steps are considered in the design process. First, the fuel enrichment required for the cycle and the most suitable burnable …
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MULTI-PHYSICS DESIGN AND ANALYSES OF LONG LIFE REACTORS FOR LUNAR OUTPOSTS
… for radiation shielding and as a supplemental neutron reflector, and safe post-operation decay heat removal and storage for potential retrieval. In addition, it is desirable for the reactor to have a long operational life. Only a limited number of space nuclear reactor concepts have previously …
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Design, Construction, and Calibration of a Proton Recoil Proportional Counter for Neutron Spectrum Measurements
Made available in DSpace on 2017-07-06T18:55:22Z (GMT). No. of bitstreams: 2 Mertogul_Remzi_MS.pdf: 40599039 bytes, checksum: e62ff031c4bb21e0db562a5c64ed9490 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1979