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College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Naeem A. Tahir, Dieter H. H. Hoffmann
Fusion Science and Technology | Volume 33 | Number 2 | March 1998 | Pages 164-170
Technical Paper | doi.org/10.13182/FST98-A26
Articles are hosted by Taylor and Francis Online.
Various aspects of burn of advanced fuel inertial fusion targets are discussed, including pure deuterium as well as D-3He targets. In the case of deuterium fuel, the mass of tritium and 3He created in D-D reactions is calculated as a function of the fuel R, keeping the fuel mass constant (20 mg). It has been found that as the fuel R is varied from 40 to 80 g/cm2, the burn of 3He increases from 20 to 75%, whereas 95% of the tritium is consumed during the burn. An ignition temperature of 5 keV is considered in these calculations. It has also been found that introduction of a small fraction of tritium atoms (1%) uniformly distributed in the deuterium fuel allows a reduction in ignition temperature by more than a factor of 2. In the case of D-3He targets, an ignition temperature of the order of 10 keV is required, but introducing 1% tritium atoms in the fuel allows an ignition temperature of 3 keV.