| Publication Date |
2007 |
| Personal Author |
Wachs, G. W.; Sterbentz, J. W.; Montierth, L. M.; Tovesson, F. K.; Hill, T. S. |
| Page Count |
7 |
| Abstract |
Neutron transmission experiments were performed on samples of an advanced nickel-chromium- molybdenumgadolinium (Ni-Cr-Mo-Gd) neutron absorber alloy. The primary purpose of the experiments was to demonstrate the thermal neutron absorbing capability of the alloy at specific gadolinium dopant levels. The new alloy is to be deployed for criticality control of highly enriched DOE SNF. For the transmission experiments, alloy test samples were fabricated with 0.0, 1.58 and 2.1 wt% natural gadolinium dispersed in a Ni-Cr-Mo base alloy. The transmission experiments were successfully carried out at the Los AlamosNeutron Science Center (LANSCE). Measured data from the neutron transmission experiments were compared to calculated results derived from a simple exponential transmission formula using only radiative capture cross sections. Excellent agreement between the measured and calculated results demonstrated the expected strong thermal absorption capability of the gadolinium poison and in addition, verified the measured elemental composition of the alloy test samples. The good agreement also indirectly confirmed that the gadolinium was dispersed fairly uniformly in the alloy and the ENDF VII radiative capture cross section data were accurate. |
| Keywords |
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| Source Agency |
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| Corporate Authors |
Idaho National Laboratory, Idaho Falls, ID.; Department of Energy, Washington, DC. |
| Supplemental Notes |
Sponsored by Department of Energy, Washington, DC. |
| Document Type |
Technical Report |
| NTIS Issue Number |
200807 |
