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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Work advances on X-energy’s TRISO fuel fabrication facility
Small modular reactor developer X-energy, together with its fuel-developing subsidiary TRISO-X, has selected Clark Construction Group to finish the building construction phase of its advanced nuclear fuel fabrication facility, known as TX-1, in Oak Ridge, Tenn. It will be the first of two Oak Ridge facilities built to manufacture the company’s TRISO fuel for use in its Xe-100 SMR. The initial deployment of the Xe-100 will be at Dow Chemical Company’s UCC Seadrift Operations manufacturing site on Texas’s Gulf Coast.
J. L. Bates
Nuclear Science and Engineering | Volume 21 | Number 1 | January 1965 | Pages 26-29
Technical Paper | doi.org/10.13182/NSE65-A21011
Articles are hosted by Taylor and Francis Online.
The absorption spectra for single crystal and polyerystalline UO2 have been measured between 0.6 and 15 μm at room temperature. The spectrum for UO2 resembles that of a typical semiconductor, opaque in the visible but transparent over a large portion of the infrared. An absorption edge is located at approximately 0.6 μm (2.0 eV). A large optical window extends from 3 to 13 μm. The absorption coefficient for single crystal UO2 has been determined between 1.5 and 15 μm. A maximum value of 57 cm-1 was measured at 1.70 μm with minimum values of 6 cm-1 at 2.75 and 8 μm. The absorption coefficient of polyerystalline UO2 at wavelengths less than 8 μm is estimated to be ten times larger than for single crystal UO2.
