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- W4366605401 abstract "orders of magnitude less in size and is used to sample scattering parameters at any temperature on-the-fly. In addition to the reduction in storage, the need to pre-generate thermal scattering data tables at fine temperatures has been eliminated. This is advantageous for multiphysics simulations which may involve temperatures not known in advance. A new module was written for MCNP6 that bypasses the current S(α,β) table lookup in favor of the new format. The new on-the-fly sampling method was tested for graphite for two benchmark problems at ten temperatures: 1) an eigenvalue test with a fuel compact of uranium oxycarbide fuel homogenized into a graphite matrix, 2) a surface current test with a broomstick problem with a monoenergetic point source. The largest eigenvalue difference was 152pcm for T= 1200K. For the temperatures and incident energies chosen for the broomstick problem, the secondary neutron spectrum showed good agreement with the traditional S(α,β) sampling method. These preliminary results show that sampling thermal scattering data on-the-fly is a viable option to eliminate both the storage burden of keeping thermal data at discrete temperatures and the need to know temperatures before simulation runtime." @default.
- W4366605401 created "2023-04-23" @default.
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- W4366605401 date "2023-04-06" @default.
- W4366605401 modified "2023-09-26" @default.
- W4366605401 title "Neutron inelastic scattering measurements on KCl and NaCl samples at the Dome" @default.
- W4366605401 doi "https://doi.org/10.2172/1970212" @default.
- W4366605401 hasPublicationYear "2023" @default.
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