Experimental Results for Direct Electron Irradiation of a Uranyl Sulfate Solution [electronic resource] : Bubble Formation and Thermal Hydraulics Studies

• Ngôn ngữ: eng
• Ký hiệu phân loại: 546 Inorganic chemistry
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. National Nuclear Security Administration ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: 52 p. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 268249
• Chủ đề: 1. 38 radiation chemistry, radiochemistry, and nuclear chemistry; 2. 42 engineering; 3. Solutions; 4. Thermal hydraulics; 5. Uranyl sulfates

Tóm tắt

In support of the development of accelerator-driven production of fission product Mo-99 as proposed by SHINE Medical Technologies, a 35 MeV electron linac was used to irradiate depleted-uranium (DU) uranyl sulfate dissolved in pH 1 sulfuric acid at average power densities of 6 kW, 12 kW, and 15 kW. During these irradiations, gas bubbles were generated in the solution due to the radiolytic decomposition of water molecules in the solution. Multiple video cameras were used to record the behavior of bubble generation and transport in the solution. Seven six-channel thermocouples were used to record temperature gradients in the solution from self-heating. Measurements of hydrogen and oxygen concentrations in a helium sweep gas were recorded by a gas chromatograph to estimate production rates during irradiation. These data are being used to validate a computational fluid dynamics (CFD) model of the experiment that includes multiphase flow and a custom bubble injection model for the solution region.