Abstract
The new development of a formula for ideal gas scattering kernel with strongly energy dependent scattering cross sections [1] suitable to NJOY [2] enabled the preparation of S(α,β) tables for U238 in the Resolved resonance region[3], which can replace the approximated solution technique in the MCNP code[4]. In this study the importance of using appropriate S(α,β) tables for U238 are examined for different fuel pin types and different U235 concentrations. For common PWR fuel pins the use of modified scattering kernel causes up to 0.5% reduction in the criticality and by higher fuel enrichment the deviation from the original MCNP results grows when the new S(α,β) tables are introduced.
| Original language | English |
|---|---|
| Pages (from-to) | 667-668 |
| Number of pages | 2 |
| Journal | Transactions of the American Nuclear Society |
| Volume | 92 |
| State | Published - 1 Dec 2005 |
| Externally published | Yes |
| Event | 2005 Annual Meeting - American Nuclear Society - San Diego, CA, United States Duration: 5 Jun 2005 → 9 Jun 2005 |
ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Industrial and Manufacturing Engineering
- Energy Engineering and Power Technology